Clamp-type non-contact inductive measurement, no need to open the wire, no need to touch the high-voltage exposed fire wire, directly sandwich the three super-inductive high-insulation clamps to the insulation skin of the three-phase live wire to detect the phase sequence. Non-contact inspection for safe and fast productivity. The dynamic sound and light indicates the positive or negative phase of the phase sequence of the three-phase power supply, which is clear at a glance. Product model: non-contact phase detector Model: ETCR1000C Function: phase detection (positive phase, reverse phase, missing phase), live line check, recommended power detection, phase detection (positive phase, reverse phase, missing phase), live line check, recommended power detection, Power supply: DC3V 2 alkaline batteries (LR6) Live power range: AC70-1000V, 45-65Hz LED display: [positive phase] 4 phase detection lights light up in clockwise direction [reverse phase] 4 phase detection lights light up in counterclockwise direction [Live power] L1, L2, L3 lights light up within the voltage setting range [missing phase] L1 or L2 or L3 lights are off [open circuit] L1 or L2 or L3 lights are off Buzzer: [positive phase] The instrument emits intermittent short beeps [reverse phase] The instrument emits continuous long beeps Battery check: After turning on the power, the POWER indicator light is on: low battery LOW BATTER light on Automatic shutdown: The meter automatically shuts down after about 5 minutes of power on Working temperature and humidity: -10°C-55℃; below 80%RH Storage temperature and humidity: -20°C-60℃; below 90%RH Measurement maximum voltage AC 1000V Insulation strength 5.4KV/rms Maximum rated power 300mVA Color: As Shown Material: plastic Package Contents: 1 * ETCR1000C Magnetic Base Meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.