RXR-MC200BD tawg-pov thawj tua hluav taws Reconnaissance neeg hlau

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Khoom piav qhiaRXR-MC200BD tawg-pov thawj hluav taws tua hluav taws tshawb nrhiav neeg hlau yog hom tshwj xeeb neeg hlau.Nws siv lithium roj teeb lub zog ua lub zog siv hluav taws xob thiab siv cov chaw taws teeb tswj wireless los tswj cov hluav taws kub tua neeg hlau.Cov neeg hlau feem ntau yog tsim los ntawm lub cev neeg hlau, ...


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Khoom cim npe

Khoom piav qhia
RXR-MC200BD explosion-proof fire extinguishing reconnaissance robot yog ib hom neeg hlau tshwj xeeb.Nws siv lithium roj teeb lub zog ua lub zog siv hluav taws xob thiab siv cov chaw taws teeb tswj wireless los tswj cov hluav taws kub tua neeg hlau.Cov neeg hlau feem ntau yog tsim los ntawm cov neeg hlau lub cev, lub taub dej loj loj, qhov tawg-pov thawj infrared dual-vision yias / qaij, audio thiab video reconnaissance, tshuaj lom thiab teeb meem roj reconnaissance, thiab handheld chaw taws teeb tswj chaw nres tsheb.Nws muaj feem xyuam rau hluav taws kub hauv txoj kev loj (railway) tunnels;hluav taws kub nyob rau hauv subway chaw nres tsheb thiab tunnels;hluav taws kub nyob rau hauv underground chaw thiab freight yards;hluav taws kub hauv qhov chaw loj thiab qhov chaw loj.Nws yog tshwj xeeb tshaj yog haum rau hluav taws kub hauv petrochemical roj depots thiab refineries;nres thiab npog ntawm lub hom phiaj hluav taws txaus ntshai;tua hluav taws thiab cawm cov hluav taws uas tsis tuaj yeem siv tau.Cov khoom no muaj lub luag haujlwm ntawm kev tua hluav taws, kev tshawb nrhiav suab thiab video, tshuaj lom neeg thiab kev tshawb nrhiav roj, thiab kev tshawb nrhiav ib puag ncig hauv thaj chaw puas tsuaj;

Scope ntawm daim ntawv thov
● Cov lag luam loj hauv petrochemical, qhov av thiab subway hluav taws cawm
● Kev cawm hauv qhov chaw ntawm cov hluav taws kub chemical los yog hluav taws kub nyhiab
● On-site cawm ntawm cov roj, roj, cov pa phem pa phem thiab tawg, qhov, subway vau, thiab lwm yam.

Nta
1. ★ Muaj peev xwm tua hluav taws
Kev tsim ntawm cov dej loj loj duckbill dej cannon tuaj yeem hloov ntau hom tshuaj tsuag dej, cov tshuaj tsuag dej tuaj yeem hloov kho, thiab qhov ntau yog siab, uas tuaj yeem ua tau raws li kev tua hluav taws ua haujlwm hauv qhov chaw loj.
2.★ qib tiv thaiv siab
Kev tiv thaiv tag nrho yog IP67
Chassis tiv thaiv qib yog IP68
3.★ Ntau hom tshuaj lom thiab teeb meem roj kuaj pom
Txog li 8 hom roj av, 2 hom kev ntsuas ib puag ncig
4. ★ Lub zog muaj zog
Muaj peev xwm los rub cov hoses, tuaj yeem rub 6 80 hoses tib lub sijhawm
5. ★ Kev siv ntau yam
Nws muaj kev ua haujlwm ntawm kev tua hluav taws, kev tshawb nrhiav, kev thauj mus los, tshwj xeeb tshaj yog kev thauj mus los ntawm cov cuab yeej cawm siav thiab cov khoom siv xws li cov khoom siv hose (xws li: hose, gas mask, zoo siab cua tshuab pa, khaub ncaws tiv thaiv hluav taws, cov cuab yeej cawm thiab lwm yam khoom siv)
6. ★ Nkag mus rau cov neeg hlau networked huab platform
Cov ntaub ntawv ntawm lub sijhawm tiag tiag ntawm tus neeg hlau qhov chaw, lub zog, suab, yees duab, cov ntaub ntawv tshawb nrhiav roj ib puag ncig, thiab lwm yam, tuaj yeem xa mus rau huab los ntawm 4G / 5G network, thiab tuaj yeem pom ntawm lub back-end PC thiab mobile terminals.

Main Specifications
4.1 Tag nrho cov neeg hlau:
1. Lub npe: tawg-pov thawj hluav taws-sib ntaus sib tua neeg hlau
2. Model: RXR-MC200BD
3. Cov haujlwm tseem ceeb: kev sib ntaus sib tua hluav taws, kev tshawb nrhiav suab thiab yees duab, kev tshawb nrhiav roj lom thiab phom sij, kev tshawb nrhiav ib puag ncig hauv thaj chaw puas tsuaj;
4. Kev ua raws li cov qauv kev lag luam tiv thaiv hluav taws: "GA 892.1-2010 Fire Robots Part 1 General Technical Requirements"
5. Kev ua raws li cov qauv pov thawj tawg: GB3836.1 2010 "Explosive Environment Part 1: General Requirements for Equipment", raws li GB3836.1-2010 “Explosive Environment Part 2: Equipment Protected by Flameproof Enclosures”, CB3836.4 2010 ” Explosive environment Part 4: Intrinsically safe protection equipment National Standard
6.★Explosion-proof type: Exd [ib] Ⅱ B T4 Gb ntawm tag nrho cov neeg hlau (qhov parameter no yog raws li kev soj ntsuam ntawm National Coal Mine Explosion-proof Safety Product Quality Supervision and Inspection Center)
7. ★ qib kev tiv thaiv: qib kev tiv thaiv ntawm tus neeg hlau lub cev yog IP68, thiab qib kev tiv thaiv ntawm sab sauv ntawm tus neeg hlau yog IP67 (qhov kev ntsuas no tau ua raws li daim ntawv tshaj tawm ntawm Lub Chaw Xeem ntawm Tuam Tshoj Coal Research Institute)
8. Fais fab: hluav taws xob, lithium roj teeb
9.★ Loj: ntev 2800mm × dav 1730mm × qhov siab 1470mm
10. ★Steering txoj kab uas hla: tig rau hauv qhov chaw
11.★ Nyhav: 2800kg
12. ★ Traction quab yuam: 20000N
13. Dragging nrug: ≥100m (towing ob DN80 enriched hoses)
14.★ Qhov siab tshaj plaws: 200L / s (150L / s ~ 200L / s ntws hloov)
15. ★ Maximum linear ceev: ≥1.6m / s, tswj chaw taws teeb stepless ceev
16. ★ Tus nqi sib txawv ncaj qha: ≤ 2%
17.★ Kev nce siab: 84% (los yog 40 °)
18. Obstacle hla qhov siab: 400mm,
19. Roll stability kaum: ≥40 degrees
20. ★Wade qhov tob: 600mm (atmospheric immersion hauv dej rau 1 teev yam tsis muaj dej)
21. Lub sijhawm taug kev tsis tu ncua: 3h
22. Lub sijhawm ua haujlwm kev ntseeg siab: dhau 16 teev ntawm kev ruaj ntseg thiab kev ntseeg siab tas li
23. Chaw taws teeb tswj nrug: 1110m
24. Video kis nrug: 1110m
25. ★Load muaj peev xwm: nqa tus kheej, uas tuaj yeem thauj cov ntaub ntawv cawm mus rau qhov chaw puas tsuaj (xws li: hose, roj npog ntsej muag, lub tshuab nqus pa zoo, khaub ncaws tiv thaiv hluav taws, cov cuab yeej cawm thiab lwm yam khoom siv);tuaj yeem nqa nqa nqa lub tsheb cawm rau hauv qhov chaw cawm;nws tuaj yeem rub obstacles los ntawm lub nplhaib towing
26. ★ Panoramic saib xyuas muaj nuj nqi: tuaj yeem tso saib 360-degree duab ntawm lub cev neeg hlau (qhov kev ntsuas no tau ua raws li daim ntawv tshaj tawm ntawm National Fire Equipment Quality Supervision and Inspection Center)
27. ★ Tus cwj pwm kev ua haujlwm: kev tshawb nrhiav lub sijhawm tiag tiag ntawm tus neeg hlau lub suab lub kaum sab xis, lub kaum sab xis yob, thiab lub kaum sab xis azimuth, kom tus neeg teb xov tooj tuaj yeem sim tuav lub xeev neeg hlau, thiab xa rov qab tus nqi rau cov chaw taws teeb tswj lub davhlau ya nyob twg rau cov lus txib kom raug. kev ua haujlwm (qhov kev ntsuas no muaj feem xyuam rau qhov zoo ntawm cov khoom siv tiv thaiv hluav taws hauv lub tebchaws Cov ntaub ntawv tshuaj xyuas ntawm lub chaw saib xyuas thiab chaw soj ntsuam zoo ib yam)
28. Autonomous obstacle kev zam muaj nuj nqi: Thaum ntsib obstacles nyob rau hauv 2 meters tom ntej, qhov ceev yog halved, thiab thaum ntsib obstacles nyob rau hauv 1 meter, nws yuav cia li nres mus rau pem hauv ntej.
29.★ Tsis Siv Neeg Txias Txias muaj nuj nqi: Nws muaj peb txheej dej kab hlau rhuav nws tus kheej-txhaj tshuaj txias tsim, uas txau thiab txias lub cev neeg hlau los tsim cov ntaub thaiv dej npog tag nrho cov neeg hlau, kom ntseeg tau tias lub roj teeb, lub cev muaj zog, kev tswj hwm thiab qhov tseem ceeb Cheebtsam ntawm cov neeg hlau yog nyob rau hauv ib txwm ua hauj lwm nyob rau hauv high kub ib puag ncig;Cov neeg siv tuaj yeem hloov kho lub tswb ntsuas kub (qhov ntsuas no yog ua raws li daim ntawv tshaj tawm ntawm National Fire Equipment Quality Supervision and Inspection Center)
30. Tsis siv neeg lub zog tsim hluav taws xob thiab recoil suppression muaj nuj nqi: Lub cev muaj zog tseem ceeb ntawm cov neeg hlau siv lub zog tsim hluav taws xob, uas hloov lub zog recoil rau hauv hluav taws xob hauv hluav taws xob tua hluav taws;
31.★Robot crawler: Hluav taws xob tua neeg hlau crawler yuav tsum tau ua los ntawm cov nplaim hluav taws, tiv thaiv zoo li qub thiab kub kub resistant roj hmab (qhov kev ntsuas no yog raws li kev soj ntsuam ntawm National Coal Mine Explosion-proof Safety Product Quality Supervision and Chaw soj ntsuam);sab hauv ntawm lub crawler yog hlau pob txha;nws muaj crawler anti-derailment tiv thaiv tsim;
32. Waterproof siv knotting muaj nuj nqi (optional): los ntawm ob lub universal qauv, nws yuav tig tau 360 degrees los tiv thaiv cov dej siv los ntawm knotting.
33. Tsis siv neeg hose tawm muaj nuj nqi (yeem): cov chaw taws teeb tswj kev ua haujlwm paub txog qhov tsis siv neeg hose tawm, kom ntseeg tau tias tus neeg hlau tuaj yeem rov qab maj mam tom qab ua tiav txoj haujlwm.
34. Control davhlau ya nyob twg: handheld tej thaj chaw deb tswj davhlau ya nyob twg nrog integrated duab thiab cov ntaub ntawv

4.2 Neeg hlau tua hluav taws system:
1. Kev saib xyuas hluav taws: tuaj xyuas hluav taws
2. Hom tshuaj tua hluav taws: dej los yog ua npuas dej
3. Khoom siv: phom lub cev-stainless hlau, phom taub hau-aluminium alloy nyuaj oxidation
4. Ua haujlwm siab (Mpa): 1.0 ~ 1.4 (Mpa)
5. Txau txoj kev: tiaj tus duckbill dej tsuag, ncaj qha tam sim no, tsis tshua muaj nthuav ua npuas ncauj
6.★ Dej / npuas dej txaus: 200L / s (150L / s ~ 200L / s ntws hloov)
7. Ntau yam (m): ≥105m (dej);≥100m (ua npuas ncauj)
8.★ Lub kaum sab xis: kab rov tav -45 ° ~ 45 °, ntsug 0 ° ~ 90 °
9. Lub kaum sab xis ntau tshaj plaws: cov tshuaj tsuag tiaj tiaj, npog thaj tsam 45-meter dav
10. Ua npuas ncauj raj: Lub raj ua npuas tuaj yeem hloov tau.Txoj kev hloov yog threaded ceev kev twb kev txuas.Lub ntsuas hluav taws xob tuaj yeem tua cov dej, ua npuas dej thiab cov kua sib xyaw, yog li nws tuaj yeem siv rau ntau lub hom phiaj, thiab tsis tas yuav hloov pauv ntawm DC thiab duckbill flattening Tshem tawm lub tog raj kheej ua npuas ncauj
4.3 Robot Reconnaissance System:
Los ntawm kev teeb tsa cov cuab yeej siv roj, cov khoom saib xyuas ib puag ncig, lub koob yees duab infrared, 360 ° pom lub teeb saib xyuas thiab infrared thermal imaging systems, pickups thiab lwm yam khoom siv hauv tsheb, nws tuaj yeem txheeb xyuas cov pa phem thiab teeb meem ntawm qhov chaw sib tsoo, ib puag ncig hauv cheeb tsam kev puas tsuaj. , video, thiab suab;configure explosion-proof Lub lifting platform yog nruab nrog ib puag ncig nrhiav kom tau sensors thiab cov koob yees duab kom paub qhov kev ntsuas thiab tsom xam ntawm cov tshuaj lom combustible gas, suab thiab video, thiab ib puag ncig ntawm txawv heights ntawm qhov chaw;
1. ★Reconnaissance system configuration: 5 lub tsheb-mounted tawg-pov thawj infrared koob yees duab, tawg-pov thawj 360 ° pom lub teeb saib xyuas thiab infrared thermal imaging system, 1 multi-parameter tester, 1 kub thiab av noo detector
2. ★ Lub lifting qhov siab ntawm tawg-pov thawj lifting platform: thawj qhov siab: 1370mm, qhov siab tom qab nqa: 2170mm
3. ★ Gas thiab ib puag ncig sensing detection module: nruab nrog wireless thaum muaj xwm ceev cawm sai sai deployment system thiab kub thiab av noo detector, uas yuav ntes tau: CO2: 0-5% VOL
CH4: 0-100% VOL
CO: 0-1000ppm
H2S: 0-100ppm
CL2: 0-1000ppm
NH3: 0-100ppm
O2: 0-30% O2
H2: 0-1000ppm
Qhov kub thiab txias: -25 ° C txog 60 ° C
Humidity ntau: 0% RH txog 90% RH
4.Infrared ntsuas kub muaj nuj nqi: Infrared ntsuas kub sensors tau nruab rau sab hauv thiab sab nraum lub tsheb los saib xyuas qhov kub thiab txias ntawm lub tsheb lub cev thiab qhov ntsuas kub (-50-350 ° C)
4.4 Neeg hlau video thiab suab xaav:
1.★ Tus naj npawb thiab teeb tsa ntawm lub koob yees duab: Lub kaw lus yees duab yog tsim los ntawm 5 lub koob yees duab siab-txhais infrared ntawm lub cev, uas paub txog qhov pom kev deb ntawm sab xub ntiag thiab 360 panoramic dluab ntawm lub cev neeg hlau;Nws tseem tau nruab nrog 360 ° pom lub teeb saib xyuas thiab infrared thermal imaging system txhawm rau txheeb xyuas qhov chaw kub thiab taug qab
2. Lub koob yees duab teeb pom kev zoo: Lub koob yees duab ntawm lub cev tuaj yeem muab cov duab meej meej hauv qab 0.001LUX tsis tshua muaj teeb pom kev zoo, nrog cov dynamic tiv thaiv co;Lub koob yees duab yuav tsum muaj peev xwm ua tau zoo thiab meej meej ntes qhov xwm txheej ntawm xoom illumination, thiab tso rau ntawm lub vijtsam LCD ntawm lub davhlau ya nyob twg.
3. ★ Panorama saib xyuas muaj nuj nqi: tuaj yeem tso saib 360-degree duab ntawm lub cev neeg hlau
4. Lub koob yees duab pixels: lab cov duab siab txhais, daws teeb meem 1080P, lub kaum sab xis dav 60 °
5. ★ Lub koob yees duab tiv thaiv qib: IP68
6. Cov kev cai rau kev sau suab: tej thaj chaw deb sau ntawm lub suab ntawm qhov chaw, yooj yim to taub qhov xwm txheej ntawm cov neeg raug daig, tuaj tos qhov deb 5 meters, ntau zaus 20Hz ~ 20kHz, rhiab heev ≥40dB
7. Kev tawg-pov thawj thermal imaging pan / qaij: thermal imaging daws teeb meem: 384 * 288;
Kev ntsuas kub ntau: -20-550 ℃, saib lub vojvoog ntawm 100 meters;
Pom pom lub teeb ntau: 33 zaug;
Kab rov tav: 0-360 °, ntsug: -90 ~ 90 °;
Tshawb xyuas thiab taug qab qhov chaw cua sov;infrared thermal imager muaj cov duab los tiv thaiv co muaj nuj nqi;muaj cov duab nrhiav tau thiab muaj peev xwm kis tau tus mob ntawm lub sijhawm;muaj qhov pom hluav taws qhov chaw tshawb nrhiav haujlwm

4.5 Cov chaw taws teeb tswj chaw taws teeb tswj kev teeb tsa
1. Dimensions: 410 * 310 * 70mm (tsis suav rocker qhov siab)
2. Tag nrho lub tshuab hnyav: 6.5kg
3. Zaub: tsis pub tsawg tshaj 10 nti high-brightness LCD npo, 4-channel video teeb liab hloov
4. Tswj system platform: window7 operating system
5. Lub sijhawm ua haujlwm: 8h
6. Cov haujlwm yooj yim: Cov chaw taws teeb tswj thiab cov saib yog kev sib xyaw ua ke thiab txav tau yooj yim, nrog rau ergonomic pluaj;lawv tuaj yeem raug saib thiab tswj tau tib lub sijhawm, thiab ib puag ncig ib puag ncig ntawm qhov chaw tuaj yeem ua kom ruaj khov rau cov chaw taws teeb tswj, thiab cov roj teeb thiab cov neeg hlau tuaj yeem tso tawm kom pom nyob rau lub sijhawm tiag tiag Slope kaum sab xis, azimuth kaum sab xis, tshuaj lom thiab teeb meem roj concentration tswb. cov ntaub ntawv, thiab lwm yam, tswj tus neeg hlau rau pem hauv ntej, rov qab, thiab tig txav;tswj lub cannon dej ua rau nce, nqis, sab laug, sab xis, ncaj qha tam sim no, atomization, tus kheej viav vias thiab lwm yam kev ua.Nws muaj cov haujlwm ntawm cov duab los tiv thaiv co;nws muaj lub luag haujlwm ntawm kev sau thiab xa mus rau lub sijhawm ntawm 360-degree panoramic dluab ntawm pem hauv ntej, nram qab, thiab ib ncig ntawm tus neeg hlau.Txoj kev xa cov ntaub ntawv yog wireless kis tau tus mob siv cov cim encrypted.
7. ★ Panorama saib xyuas muaj nuj nqi: tuaj yeem tso saib 360-degree cov duab ntawm lub cev neeg hlau hauv lub sijhawm.
8.★ Kev kaw video thiab playback muaj nuj nqi: yees duab tuaj yeem kaw tau txhua lub sijhawm, cov ntsiab lus video kaw tau txais kev cawmdim, cov vis dis aus tuaj yeem ua si ncaj qha rau ntawm qhov chaw taws teeb tswj chaw taws teeb, lossis cov vis dis aus tuaj yeem luam rau lwm yam khoom siv.
9. ★Nrog rau qhov projection screen muaj nuj nqi: tuaj yeem txuas nrog cov cuab yeej projection xws li projectors los ntawm HDMI interface, uas yooj yim rau cov thawj coj ua haujlwm sib tham thiab txiav txim siab ua ke
10. Taug kev tswj muaj nuj nqi: Yog, ib tug peb-axis industrial joystick, ib qho joystick paub txog kev hloov pauv ntawm cov neeg hlau rau pem hauv ntej, rov qab, sab laug thiab sab xis tig.
11. Hluav taws xob saib xyuas muaj nuj nqi: Yog, 1 peb-axis industrial joystick, ib qho joystick tuaj yeem tswj cov dej saib kom nce, nqis, sab laug, sab xis, DC, thiab atomization ua.
12. Tswj thiab soj ntsuam qhov system nqa nqa: Yog, tus kheej rov pib dua jog hloov
13. Yees duab hloov: Yog, nws tus kheej-reset jog hloov
14. Tswj qhov tsis siv neeg rub txoj siv ua haujlwm: Yog lawm, tus kheej rov pib dua jog hloov
15. Kev tswj teeb pom kev zoo: Yog lawm, tus kheej rov pib dua jog hloov, tus tswv tsev lub khoos phis tawj ua tus kheej xauv cov lus teb
16. Cov cuab yeej pabcuam: tuav cov chaw taws teeb tswj lub davhlau ya nyob twg lub xub pwg pluaj, txav tau lub koob yees duab

4.6 Internet muaj nuj nqi:
1. GPS muaj nuj nqi: GPS qhov chaw, taug qab tuaj yeem queried
2. ★ Nws tuaj yeem txuas nrog cov neeg hlau huab tswj platform (yeem): lub npe neeg hlau, qauv, chaw tsim khoom, GPS qhov chaw, roj teeb lub zog, video, kub, av noo, CO2, CO, H2S, CH4, CL2, NH3, O2 tuaj yeem txuas tau, H2 cov ntaub ntawv xa mus rau huab tswj platform los ntawm 4G / 5G network, thiab cov xwm txheej neeg hlau tuaj yeem kuaj xyuas lub sijhawm ntawm PC / mobile davhlau ya nyob twg.Nws yog qhov yooj yim rau cov thawj coj los txiav txim siab thiab cov cuab yeej tswj hwm los tswj tag nrho lub neej ntawm cov neeg hlau
4.7 Lwm yam:
★ Kev npaj thauj mus los thaum muaj xwm txheej ceev (yeem): neeg hlau tshwj xeeb thauj trailer lossis tsheb thauj neeg mob tshwj xeeb

Cov ntawv ntim khoom
1.1.Explosion-proof fire-fighting reconnaissance robot × 1
2.2.Handheld chaw taws teeb tswj lub davhlau ya nyob twg × 1
3.3.Tsheb lub cev charger (336V) × 1 teeb
4.4.Chaw taws teeb tswj charger (19.6V) × 1 teeb
5.5.Kav hlau txais xov (digital kis tau tus mob) × 2
6.6.Kav hlau txais xov (daim duab kis tau tus mob) × 3
7.7.Neeg hlau huab tswj platform × 1 teeb (yeem)
8.Robot tsheb thauj neeg mob xwm txheej ceev × 1 (yeem)

Daim ntawv pov thawj
1.1.Cov ntaub ntawv pov thawj tawg ntawm tag nrho lub tshuab: Exd[ib]IIBT4Gb, muab daim ntawv pov thawj pov thawj tawg rau kev siv
2.2.Hluav taws kub tua neeg hlau dej cannon los tswj kev tawg-pov thawj lub cev muaj zog: ExdIIBT4GB, thawj daim ntawv pov thawj tawg yog muab rau siv
3.3.★ Daim ntawv pov thawj tawg-pov thawj ntawm roj thiab ib puag ncig kev soj ntsuam xyuas module: ExdibIICT5GB, muab thawj daim ntawv pov thawj tawg rau kev siv
4.4.★ Daim ntawv pov thawj hluav taws kub rau roj thiab ib puag ncig sensing detection module: dhau qhov kev tshuaj xyuas ntawm National Fire Equipment Quality Supervision and Inspection Center, thiab muab cov thawj coj los siv.
5.5.★ Daim ntawv pov thawj tawg-pov thawj ntawm tawg-pov thawj lifting platform: ExdIIBT5GB, muab thawj daim ntawv pov thawj tawg rau siv
6.6.★ Kev soj ntsuam daim ntawv tshaj tawm ntawm cov khoom siv crawler rau cov neeg tua hluav taws tua hluav taws: cov ntaub ntawv tshuaj xyuas ntawm National Coal Mine Explosion-proof Safety Product Quality Supervision and Inspection Center
7.7.★ Dhau qhov kev soj ntsuam los ntawm Lub Chaw Ntsuas ntawm Coal Science thiab Technology Research Institute Co., Ltd., qib kev tiv thaiv ntawm lub cev neeg hlau yog IP68, thiab qib kev tiv thaiv ntawm sab sauv ntawm cov neeg hlau yog IP67.Thawj qhov chaw yog muab rau siv
8.★ Cov khoom siv tiv thaiv dej tsis siv neeg txiav tawm tau txais daim ntawv tsim khoom patent los ntawm Lub Xeev Lub Chaw Haujlwm Saib Xyuas Kev Txawj Ntse, thiab tus thawj yog muab rau kev siv

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