HBZ (G) K-1 type mine Ann explosion-proof telephone
Call out: calling party after picking machine and working indicator, can according to the called party number, Called user is in a state of ringing, and there is a light shining indicator,called party can hear the called party from the receiver's phone ringing out.
Environmental conditions of use:
Using the environment temperature: - 5 ℃ to + 40 ℃;
Using relative humidity: 95% or less (+ 25 ℃)
Using atmospheric pressure: 80-106kpa or less
Using environmental noise: 65 db (A) or less