Functional Features：

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Used in conjunction with the HY6311 bus based fire alarm telephone dispatch switchboard. When an emergency occurs, the user can insert the portable fire telephone extension into the local jack to call the switchboard. The dip switch of this machine is pre-set with a 7-digit code, with an effective code range of 1-99. As needed, this machine can be expanded and connected to multiple ordinary fire telephone sockets, with a maximum of 30 sockets. The total number of ordinary fire telephone sockets that can be expanded and connected to the entire system does not exceed 300.

Technical Parameter：

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Environmental temperature: -10~55 ℃
Relative humidity: ≤ 95%
Atmospheric pressure: 86-106kPa
Environmental noise: ≤ 60dB
Frequency response: 300-3400Hz
Standby power consumption:<1.2mA
Call power consumption:<30mA
Dimensions: 110mm x 90mm x 40mm (length x width x depth)
Weight: 100g