DAC RA-708 Analogue Telephone - CB / Grey / Steel CordTechnical Specification Speech Network Interface Tested to TBR21 TBR38 Ringing Frequency modulated, Piezo transducer, cadence as per incoming ringing. REN 1. 0 Power Supply Line powered, 10mA min. Time out Jumper selectable OFF, 3 or 7 minutes Temperature Operating : 30 C to +60C Storing : 40 C to +70C Relative Humidity Up to 95% (non condensing) Casing Material Robust cast aluminium. Weight 3. 5kg Colours Standard Yellow or Grey durable powder coat.
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