ITEM NAME:DC7.5V-10V Handheld Wireless Remote Control Detector Frequency Tester #JT1 Product Description Description: DC7.5V-10V Handheld Wireless Remote Control Detector Counter Frequency Tester Features: It can accurately test the frequency of the remote controller, and can clearly display. Its effective test range is 250-450MHZ. The test method is very simple, as long as the remote controller needs to be tested near the frequency meter, the frequency of the remote controller can be accurately tested. (valid test range is no more than 10cm). Specification: Operating voltage: DC7.5V-10V Standby current: 40mA Operating current: 51mA Power supply mode: 1 x 9V Battery(Not included) Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding. Included: 1 x Remote Control Detector 1 x Connecting Line.(valid test range is no more than 10cm). 1 x Connecting Line. Due to the different display and different light, the picture may not reflect the actual color of the item. Warranty Service. If item is defective after 3 months, you can still send it back to us.