Cartons,Wooden cases or others as you are required
Immediate delivery when goods finished
Rated feedelectricity voltage
Rated feedelectricity current
Liberating bell current(mA)
Liberating bell voltage (2000,Hz)
Liberating bell soundgrade (dB)
Call capability(Remete)dB / Impersonal send
Call capability(Remete)dB / Impersonal receive
By 5Km copied string≤+18
By 5Km copied string≤2
The series telephone is used under the coal mine which is full of explosive mixture gas such as methane, coal-dust and soon, in medium surrouded,it can work as a commu-nication tool along the workplaces such as coal-cutting and water pumphouse etc, it can work with cioal-mining main telephone and be come the commuication net of mining production dispatchingand admin stration.
KTH type telephone is intrinsic -safety type, its shell is of diecasted A1-alloy,and the telephone use good typing type keyboard,and has the featrues of convie-nce and security.