Shenzhen, Guangdong, China
Business Type: Manufacturer/Factory, Trading Company
3.Technical parameter | |
Ambient temperature | -30~+60°C |
Defend grade | IP66 |
Relative humidity | 10%--95% |
Atmospheric pressure | 86~106KPa |
Circumstance noise | less than 60dB(A) |
Sound level of ringing | >70dB(A) |
Standard frequency | 697. 770. 852. 941Hz |
Call transmission index | (5KM)SLR |