Features Non-contact Induction Technology: The high-voltage electric meter adopts non-contact induction technology, which has accurate alarm, power saving and durability, and the standby time is up to 12 months. Omni-directional Induction: The high-voltage near-electricity alarm can sense the voltage power supply in an all-round way, automatically trigger the detection method, and have an audible and visual alarm method to ensure the safety of nearby electricity users. Ultra-high Sensitivity: The arm-type high-voltage proximity alarm has ultra-high sensitivity and can sense 40V~1kV voltage. The alarm will sound and light alarm according to the safety distance of the corresponding voltage level. Wide Application: High-voltage alarms are widely used in closed power operations such as electric power, railways, and industrial and mining enterprises, and can be carried directly on the arm. Reliable and Practical: The non-contact live alarm provides a safe, practical and convenient new high-voltage alarm device for live workers. Specification: Item Type: Approach Electric Alarm Material: ABS Color: As shown in the picture Protection level: IP54 Working environment: -10℃~40℃; less than 80%RH Storage environment:-10℃·60℃; less than 70%RH Meter voltage range: ETCR1870C: 40V-1KV Distance error: ±10cm (23℃±1℃, 80%RH under basic conditions) Working frequency: 50/60HZ Electric test mode: Non-contact mode Detection mode:Auto trigger How to Use: 1: This arm type alarm is not a voltage tester, and it is prohibited to use it as a voltage tester. Because high-voltage operation is very dangerous, operators must undergo rigorous training and obtain corresponding high-voltage operation certifications before using the instrument for on-site testing. 2: When using, please wear the alarm on your arm so that the triangular symbol on the surface of the alarm point faces the direction of your fingertips. 3: This alarm only provides safety assistance measures, please do not overestimate the safety guarantee after wearing this alarm. 4: Near grounded metal structures (such as transformer), the working distance of the alarm will not be reduced. 5: If the alarm is hung on the sleeve of work clothes or rubber gloves, the sensitivity will not decrease. 6: When the alarm gets wet in the rain, please take out the battery and dry it naturally in a cool place. Please do not use the alarm in a humid state, this time it will greatly shorten the working distance of the alarm, even the alarm will always sound an alarm. 7: If the alarm is hit or hit by a strong external force, check the appearance of the alarm and press the "TEST" button to test to ensure that the alarm functions normally. 8: Please read the manual carefully after purchase. Package List: 1 x Approach Electric Alarm(Battery Not Included) 1 x Instruction Manual 1 x Button Sheet Package List 1 x Approach Electric Alarm(Battery Not Included) 1 x Instruction Manual 1 x Button Sheet