22mm 220V AC Digital Display Ampermeter Monitor Current Indicator Signal Light red led ammeter Indicator Lights
ANNELE digital voltage indicator lamps are compact integrated signal lights with built-in digital AC voltage display, designed for standard 22mm industrial control panels. Two housing styles (round & square) and multiple lens colors (red, yellow, green, blue, purple, white, grey) are available to meet diverse equipment layout and circuit identification demands.
Equipped with high-brightness 3-digit LED digital tubes, the indicator directly shows real-time AC voltage values without external transformers, supporting common AC ranges including 12V, 24V, 36V, 110V, 220V and 380V. The display precision reaches ±2% full scale, with stable 50/60Hz frequency adaptation for general industrial power grids.
Constructed from flame-retardant high-strength PA plastic housing, the voltmeter features low power consumption (≤0.5W) and ultra-long LED service life over 50,000 hours. It passes CE and RoHS certification, with reliable insulation and vibration resistance to withstand harsh workshop operating environments.
Simple two-wire connection enables quick installation: insert the unit through a 22mm panel cutout and fasten the rear lock nut, then wire two terminals directly to the target AC circuit (no polarity required). Color coding follows universal industrial standards: green for normal power supply, red for high voltage/fault warning, yellow for standby state, and blue/white/purple for auxiliary circuit marking.
Widely applied in distribution cabinets, motor control boxes, automated production lines, packaging machinery, elevators and new energy test equipment, this mini digital voltmeter offers intuitive real-time voltage monitoring to help operators quickly identify power supply abnormalities without extra measuring tools.
Product Parameters

- Brand: ANNELE
- Product Name: Mini Digital Voltage Display Indicator Lamp
- Mounting Hole: Standard Φ22mm industrial panel cutout
- Two Shape Options: Round head / Square head
- Available Colors: Red, Yellow, Green, Blue, Purple, White, Grey
- Display Screen: 3-digit digital LED tube, voltage unit "V" marked
- Working Principle: Direct AC voltage real-time display, built-in sampling circuit, no external transformer required
| Parameter Item |
Standard Specification |
| Measuring Voltage Range |
AC 12V / 24V / 36V / 110V / 220V / 380V (multiple options) |
| Display Precision |
±2% full scale |
| Refresh Frequency |
2 times per second |
| Power Consumption |
≤0.5W |
| Service Life of LED Chip |
≥50,000 hours |
| Operating Frequency |
50/60Hz AC universal |
| Insulation Voltage |
2kV withstand voltage |
| Standard Compliance |
IEC 60947-5-1 |
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