COCO Technology ABST-604 lightmeter

ABST-604, 30 m, 2 x 1.5 V AA, White The wireless dusk/dawn sensor (ABST-604) can be placed indoors and outdoors, without wiring and high voltage, because the transmitter is battery powered. The sensor automatically activates our COCO receiver(s) when it gets dark. After a programmable time (2, 3, 4, 5, 6, 7, 8) or when it gets light again, the sensor automatically switches your receiver(s) off. The ABST-604 is compatible with all COCO receivers with the automatic code system. This transmitter sends radio signals at 433,92 Mhz. The signal passes through walls, windows and doors, with an indoor range up to 30 meters.