Intelligent light sensing: With the night light, the daylight will not light, the will be bright, and the will be extinguished. Strong penetrating power: The signal transmitted at a long distance is stable, so there is no need to worry about not receiving the signal. 52 music : the first beautiful and beautiful; the sound quality is , there is always one you like. The volume of 4 files is adjustable: no because the sound is too loud and no because the sound is too small to hear. Energy saving: The transmitter solar charging uses household electricity, less than one year in a year. Solar charging: save money,save , and be green. No radiation: the Ministry of Children and the Elderly can be used safely. Freely pairable: one transmitter can be matched to receivers, receiver can also be matched to transmitters. Receiver operating voltage: 90-260V; Receiver standby current: 10mA; Receiver operating current: 60 mA; Receiver operating frequency: 433MHz; Receiver power: less than or to 2w; The receiver can adjust the volume: 20-80db (4th adjustment); Transmitter solar cell: 150Mah polymer lithium battery;Transmitter solar panel maximum power: 5.5V 25mA 0.13W;Transmitter operating current: 12mA;Transmitter working range: about 200-300m (open area);Transmitter waterproof rating: IP65;Music: 52 plug into the socket, press volume button for 6 seconds, blue led light keep on, then press transmitter button, when receiver blue led flash, means pair successfully. It will fail paring if you can not finished within 6 seconds Attention: One transmitter can be matched with receivers. One receiver can be matched with transmitters as ., and with memory function off power. Transmitter: Solar cell Working reference :5.5V 25mA 0.13W No string of code Working current:12mA 0.5 second for reaction when pressing the button with light reminder Working range: about 200-300m (on open air) Receiver: Working voltage: 90-260V Standby current: 10mA Working current: 60mA Working Frequency: 433MHZ with the function of night light, Brighting at night or dark Plug Type: EU Plug,it applies to Indonesia, , , , and so on. Colour: black Material: plastic Size: transmitter: 90x35x15mm receiver: 85x85x26mm Package Contents: 1 * receiver 1 * transmitter 1 * installation accessories Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.