Features: 1.It is a remote control frequency tester, which can accurately test the remote control frequency and display clearly. 2.This allows you to easily adjust the exact frequency required to configure the remote controller. 3.Application Scale: Electric door controller, auto door burglar alarm controller etc. Remote control, electric lock, garage door; Remote control, entry guard, and so on. 4.As long as you approach the remote controller to the tester no more than 10cm, it can accurately test your remote controller. 5. Specification: Features: It is a remote control frequency tester, which can accurately test the remote control frequency and display clearly. This allows you to easily adjust the exact frequency required to configure the remote controller. Application Scale: Electric door controller, auto door burglar alarm controller etc. Remote control, electric lock, garage door; Remote control, entry guard, and so on. As long as you approach the remote controller to the tester no more than 10cm, it can accurately test your remote controller. Specifications: Working Voltage: DC 7.5-10 V or 6F22 Working current: 51mA Standby current: 40mA Test coverage: 250-450 MHZ Test Distance: 10 cm Weight: 73g/2.7oz Package List: 1* Tester