Product parameters:1. Work: wireless digital remote control、 do not interfere with each other over long distances obstacle remote control2. Receiver Operating Voltage: DC 3V DC3. Power: ¨Q 2W4. Operating frequency: 315MHZ5. remote control / receiver distance ¨R 120m (open area)6. Power Source: 3V 2AA batteries7. Transmitter Operating Frequency: 315MHZ8. Transmitter working voltage: 12V (Battery Model: 23A 12V)9. The transmitter operating current ¨Q 15mA (20 times a day by the calculation、 a high quality battery can use a year)10.LED indicators: press the launch button、 the transmitter's LED indicator light emitter work and the receiver receive instruction、 but also play beautiful music、 remind you have VIP visits、 and "blue" on the receiver LED is also accompanied by music regularly flashing11. sources: 36 sources to choose from Specifications:Transmitter: 3 * 2 * 3CMReceiver: 9 * 6 * 2.8CMRingtones: 16 polyphonic ring tones 38