
Product Series : Wearable Proximity Alarm
When the alarm device approaches a live conductor within its detection range, it automatically triggers an audible, visual, and vibrating alarm to alert personnel and prevent electric shock. It can also be used for line fault detection and as an electroscope
Alarm Voltage Range: 40kV ~ 500kV
Alarm Voltage Gears: 4
Voltage Detection Method: Non-contact
Alarm Methods: Buzzer, Light, Vibration
Self-Test Function: Yes
Silent Mode: Yes
Clock Function: Yes
Standby Time: 90 Days
Product Introduction
EM1860P wrist-worn high- and low-voltage proximity alarm provides workers performing live-line operations with a safe, practical, and convenient new high-voltage warning device. During live-line operations, the safety distance between the operator and live conductors must not be less than the requirements specified in relevant work procedures. When worn by workers, this alarm continuously monitors the electric field in all directions. Upon approaching a live high-voltage object within a certain distance—based on the safety distance corresponding to the voltage level—the alarm is triggered when the detected electric field exceeds the threshold. It then emits audible, visual, and vibrating alerts to remind electrical workers to exercise caution and prevent high-voltage electric shock accidents.
EM1860P wrist-worn live-line detection alarm uses a rechargeable lithium battery and features a 1.3-inch color LCD screen that displays the current date, time, and alarm voltage. It includes functions such as self-test, clock, mute mode, and adjustable alarm voltage settings. The alarm utilizes contactless, low-power technology, making it energy-efficient and durable, with a standby time of up to 30 days. It is widely used in live-line work environments across the power, railway, telecommunications, and industrial sectors.
ETCRMETER is a high-end brand of ETCR. All products are manufactured by ETCR, which also provides technical support and after-sales service.
Product Features
1. Detects airborne electric fields from all angles with no blind spots and automatically triggers an alarm.
2. Three alarm modes: LED indicator, buzzer, and vibration.
3. Self-test function: The alarm performs a self-check to ensure the safety of workers.
4. Clock function: Displays the current date and time.
5. Alarm voltage setting: Four alarm voltage levels are available to meet the needs of various environments.
6. Silent mode: In environments with strong electric fields, the buzzer and vibration alarms are triggered once every 5 minutes (for 5 seconds) to prevent auditory interference.
7. Breathing light function: In standby mode, the indicator light flashes slowly to indicate that the alarm is functioning normally, allowing workers to operate with peace of mind.
8. Built-in high-capacity lithium battery: Standby time of up to 90 days.

Technical Parameters
1.Voltage Level & Alarm Distance
| Voltage Level | Safety Distance | Alarm Distance |
| 400V | / | 30cm |
| 10kV | 0.70m | 1.00m |
110kV | 1.50m | 2.00m |
| 220kV | 3.00m | 3.00m |
Note: 1. The safe distance is based on "GB 26860-2011 Power Safety Work Regulations-Electrical Parts of Power Plant and Substation" and "GB 26859-2011 Power Safety Work Regulations-Power Line Part". In practical application, the alarm distance of the alarm has changed accordingly due to the influence of the environment.
2. Alarm distance error range: ±10 cm (400 V), ±20 cm (10 kV/110 kV/220 kV) (at 23°C ± 1°C and 80% RH under reference conditions). Reference conditions refer to standard laboratory conditions; in actual applications, the alarm distance error may vary depending on on-site humidity and environmental conditions.
2.General Specifications
| Specification Name | Parameters Description |
| Function | Detect the air electric field; trigger an alarm when it exceeds the threshol |
| Power Supply | 3.7V, 900 mAh lithium batter |
LCD Screen | 1.3-inch TFT color screen, resolution 240 × 240 |
| Alarm Voltage Range | 4 selectable alarm voltage levels: 400 V; 10 kV; 110 kV; 220 kV |
| Work Frequency | 50Hz/60Hz |
| Voltage Detection Method | Detection of Airborne Electric Field |
| Battery Life | Continuous operation of audible, visual, and vibrating alarms: 15 hours |
| Standby time: approx. 30 days | |
| Alarm Method | Indicator light: 8000LX visible light visible LED light |
| Buzzer: Above 70dB (60cm apart) | |
Vibration: 12,000 RPM | |
Self-test Functio | After turning on the unit, press TEST to perform a self-test and verify that the alarm is functioning properly |
Silent Mode | In environments with strong electric fields, a 10-second audible and vibrating alarm is triggered every 5 minutes to prevent continuous disruption |
| Protection Level | IP54 |
| Clock Function | Displayed: Date, Month, Year, Hour, Minut |
| Overall Size | 90mm × 40mm × 35mm |
| Weight | Approx. 80g (include battery); Total:0.22kg (include accessories) |
| Working Temperature & Humidity | -10℃ ~ 40℃; below 80%RH |
| Storage Temperature & Humidity | -10℃ ~ 60℃; below 70%RH |
Model Comparison
| Model | Alarm Voltage Range | Alarm Method | Others |
| 0.4kV~500kV | Sound & Light Alarm | / |
| 40V~1kV | Sound & Light Alarm | / |
| 1kV~500kV | Sound & Light Alarm | / |
| 40V~1kV | Sound & Light Alarm | / |
| 40V~500kV 2-speed adjustable | Buzzer, light, vibration Alarm | Lithium-ion battery |
| 40V~500kV 4-speed adjustable | Buzzer, light, vibration Alarm | Silent Mode Lithium-ion battery |
Product Video

+86 13802922567 (Johnson Zhang)


+86 13809214246 (Wendy Wong)

10th Floor, Block 5, Liandong Intelligent Manufacture Park, No. 105, Shilong North Road, Nanhai District, Foshan City, Guangdong, China