Red Fire telephone EVC outstation c/w handset (key lockable)

Approvals/certifications:  Facilitates compliance with BS5839-9 when correctly installed.
Supply/operating voltage:  11V DC derived from a compatible SigTEL Master Controller (drops to 6 V DC when in use).
Quiescent current:  1mA
Activation current:  25mA (current draw when handset is in use).
Open collector outputs:  None.
Indicators:  When the operator in the control room calls the outstation, a pulsed ringing tone sounds at the outstation.
Controls:  Lift-key lock mechanism (a lift lock key must be issued by the person responsible for the system to all relevant personnel); Telephone-style handset (lift to answer or make a call).
Expansion connections:  None.
Product dimensions (mm):  202 W x 278 H x 100 D mm.
Construction & finish:  Red steel (RAL 3000).
IP Rating:  IP20.
Weight:  3 kg.
Operating conditions/temperature:  -5ºC to +40ºC. Max relative humidity: 95%.
Notes:  Microphone frequency response 250 Hz to 5 kHz ±3 dB; Loudspeaker frequency response 250 Hz to 4 kHz ±3 dB.