1. Measurement accuracy: 1 percent +/-1 word2. Measuring range:- Voltage: AC80-300V- Current: AC0.00-100.0A- Frequency: 45-65Hz- Power: 0-30000W- Electricity power: 0.000-99999kwh- Power factor: 1.000-0.0003. Display the measured AC voltage, current, frequency, power, electrical energy, etc4. Adopt flame retardant PC material and precision chip, safe to use5. If the current is less than 100A, just pass the wire through the hole on the right side of the instrument to get the AC current6. When the meter shows energy, press and hold the SAM CK button for five seconds, the meter will be reset7. Automatically records the amount of power and accumulated power at the time of power failure: the instrument will continue to collect data when reconnected to the measurement power source8. Size: 54 x 80 x 64mmSpecification: Package Weight One Package Weight 0.14kgs / 0.32lb One Package Size 9cm * 6cm * 7cm / 3.54inch * 2.36inch * 2.76inch Qty per Carton 140 Carton Weight 20.70kgs / 45.64lb Carton Size 51cm * 38cm * 32cm / 20.08inch * 14.96inch * 12.6inch Loading Container 20GP: 429 cartons * 140 pcs = 60060 pcs 40HQ: 998 cartons * 140 pcs = 139720 pcs