Industrial telephone Dust-proof key prison telephone-JWAT137
|Prisons, labor camps, drug rehabilitation centers and other public places.|
|◆ A telephone can be a separate communication system through switches and couplers.Direct access to the telecommunications network◆ After the call system is formed, the product has automatic gain function, and the voice size does not change with the distance or telephone number.
◆The circuit inside the telephone adopts the international universal double-sided integrated circuit, which has the advantages of accurate number, clear call and stable operation.
◆With volume adjustment function.
◆Stained steel shell with stainless steel surface, high mechanical strength and strong impact resistance.