Features1. AC voltage detection pen, AC voltage measurement range is 12-1000V, 50/60HZ, easy to detect. 2. With high and low sensitivity switches, the sensitivity can be adjusted for flexible measurement. 3. It adopts humanized pen holder design, novel appearance, stable performance, safe and portable. 4. Non-contact measurement, when close to AC voltage within the specified voltage range, it will emit LED lights and beep. 5. Low power consumption, specially used for home circuit detection, suitable for electricians. 6. With flashlight, automatic shutdown function (about 3 minutes), it can continue to work in dark environments.Specification1. AC Voltage: 12V -1000V 2. Frequency: 50Hz/60Hz 3. Alarm Mode: Sound/Light/LCD Screen 4. Display: LCD Display Screen 5. Flashlight: Yes 6. High and Low Sensitivity Switch: Yes 7. AC Voltage Detect: Yes 8. Low Voltage Indicator: Yes 9. Auto Power-Off: Automatically shut down when there is no induction or operation for 3 minutes. 10. Battery type: 2 x 1.5V AAA Battery (not included) 11. Size: 167.45 x 26.30 x 21mm 12. Weight: 47.4g 13. Operating environment: 0-40 degree C, relative humidity: Less than or equal 95%. 14. Storage environment: -10-50 degree CSpecification: Package Weight One Package Weight 0.08kgs / 0.18lb One Package Size 22cm * 10cm * 4cm / 8.66inch * 3.94inch * 1.57inch Qty per Carton 120 Carton Weight 8.50kgs / 18.74lb Carton Size 55cm * 47cm * 24cm / 21.65inch * 18.5inch * 9.45inch Loading Container 20GP: 429 cartons * 120 pcs = 51480 pcs 40HQ: 997 cartons * 120 pcs = 119640 pcs