Description:   8 Channel 433MHz 3000m Wireless Remote Control For Home Door   Features:    - Easy and convenient to operate - Energy-saving design、 allows long service life - Small size but stable performance - Your best choice for a more convenient daily life - Strong penetrating power、 transmission distance reach at 3km - Application range: Remote control switch、 anti-lost alarm system、 remote control door、 industry controlling products etc.   Specification:   Working voltage: DC 9V(6F22) Working frequency: 433MHz Battery: 12V 23A Standby current: 0mA Working current: More than 85mA Transmitting distance: More than 3000m( The sensitivity of the wide area must be -103dBm and above.) Transmission rate: 3-6k Coding method: Fixed code(PT2264) Operating temperature: -20\u2103 ~ +70\u2103 Size: 137mm*42mm*25mm Style: 8 buttons   Package includes:    1 x Wireless Remote Control 1 x Battery   Details pictures: