High quality garage/car key wireless remote control frequency tester, supports 200-900MHz frequency range (ASK), detects fixed code and rolling code, Note:1. Remove other electronic devices that may interfere with frequency, like cellphone, computer, light, led,etc. 2. Place car key remote control on sensing area below display screen and the button to test!! The -FD100 Remote Control Tester has been developed to assist with diagnosis of many types of () Radio Frequency remote controls clone working. It could let you easy to confirm if frequency and data of new keys or remote controls are same as old one. Type:Remote Control Detector, Power Input: 5V (Type-C), Data Compare:YES, Frequency Range:200Mhz to 900Mhz,ASK, Colour:As Shown Material:PC Package Contents: 1 x Universal Remote Control Tester 1 x Type-C Cable(The words on product due to different product batches, but it not affect use) Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.