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SPKR Batt low Batt low This LED near the centre of the keypad will light when the battery needs replacing. A suitable replacement battery is RS stock no. 591-792 OPER TALK MONITOR MUTE Black wire = tip or +ve terminal...
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Loudspeaker-monitor mode Connect to line, press SPKR to activate. In this mode volume is RS Components shall not be liable for any liability or loss of any nature (howsoever needed, press VOL. To reduce volume press again. caused and whether or not due to RS Components’ negligence) which may result from the use of any information provided in RS technical literature.
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