Adjustable frequencyVoltage displayCurrent displayInverter compressor testingSingle-wire frequency conversion board detectionPulse solenoid valve detectionThe main board detects the output of solenoid valveCurrent observation of fixed frequency compressor power supplyTwo-wire frequency conversion board detectionElectric valve stuck valve repairHome air-conditioning electronic expansion valve drive detectionSingle/double damper detectionDamper heating wire power displayThree-wire fan detectionFour-wire fan detectionThe main board to inverter board output signal detection2K/5K/10K temperature probe detectionCompressor short circuit buzzer alarm, Other compressor fault buzzer alarmAir-conditioner three wire fan frequency conversion motor driveRange hood by three wire variable frequency motorThe compressor cylinder clamping instrument will make three attempts to , and if it fails to , the buzzer will give an alarm.Colour:blueMaterial:plastictype:220VPackage Contents:1 x Multifunctional Inverter Refrigerator Detector KitOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.