亚州免费在线播放_亚洲成年网在线观看黄_免费一级毛毛片_午夜高清无码性爱视频

“PHONTECH” BATTERYLESS TELEPHONE SYSTEM

 

System BTS 4000 is an emergency telephone system without the requirement for any external power supply. All energy required for 4-6 minutes of continuous operation iss produced by the call generator. The system is equipped with a sophisticated, extremely low power amplifier with hight power and low distortion output. The amplifier is sintegrated in one of the telephone units to reduce the installation cabling. The system may also be connected to 24VDC power supply to ensure continuous operation under normal conditions. The system automatically switches to batteryless and emergency operation in case of mains failure.

 

Thd syste is based on three types of units: 4050-single line (direct call), 4060-12 lines version and 4040-24 lines version. Any configuration needs one master telephone with a built-in amplifier, either 4051 – single line or 4060 – 12 lines version. For the 24 lines version a separate speech amplifier type 4000 is needed.