The
receiver is high - miniaturization silicon module .
Demodulation
by means of single IF conversion obtained making use of crystal .
Working
frequency : 433 MHz . RF sensitivity : - 100 dbm . LF bandwidth : 20 Hz
to 20 kHz .
The
receiver starts to operate immediately it senses transmission , and stops
at no transmission .
Very low current drain at stand by mode , allowing the receiver to be on
hold for up to one week time on D - size alkaline batteries . (not included
) .
Operation
(recording ) period for up to 24 hours on alkaline batteries .
Doubling
the record time by a push of a switch . possibility to eavesdrop with no
recording .