4 + 1 (4 + + Listener Detectors)
Buy: Set of el. 4 + 1. The signaling devices are watertight, 9V power supply, 200m range. 8 scene identification sensitivity (two directions) of sound, tone, and pitch. Equipped with diode on the edge sign. Control of sensitivity, volume and melody, complete shutdown of the sound. Listening features vibration, tuner tuning, light signal. Long battery life.
Price:
2990