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This product is used to detect whether there is a signal from each key of the remote control, which is convenient to determine whether the receiver is faulty or the remote control is faulty. If a key fails to send a signal, most of it is a key failure; if none of them, it may be power failure or remote control damage. If the signal is OK, there may be a receiver failure or no match. Features: Wide Application. The remote control frequency detector can detect the remote control of all models. Ideal for fault finding on automotive remote control or commercial vehicle electrical circuit. This portable frequency detector is small in size, accurate in measurement and small in error. With a 4-digit screen, the result can be clearly displayed. This makes it easy for you to adjust the exact frequency you want. Easy to carry and operate.100% premium quality and brand new. Specifications: Color: White Working voltage: DC7.5-12V Standby current: 37mA Testing accuracy: +-1MHz Size: 95*60*25mm Material: Plastic Package size: 10*8*4cm / 3.94*3.15*1.57in Package weight: 71g / 2.5oz Note: This product is equipped with a 9V battery connection wire as standard. Due to transportation safety problems, it is not equipped with a battery. Package List: 1 *  Frequency Detector 1 *  Power wire #frequencymeter #RemoteControls #transmitterfrequencymeter #Tool #frequencydetector #frequency #frequencymetertester #testerfrequency #frequencytester #frequencycounter