Autonics MT4W-AA-40 Digital Panel Meters with Diverse I/O
The MT4W-AA-40 Autonics Digital Panel Meters with Diverse I/O measures AC current frequency using 4-digit LED display technology included. Manufactured by Autonics, this digital panel meter belongs to Autonics Digital Panel Meters and the MT4W Series, supporting a -1999 to 9999 display range, 100–240VAC power supply, relay outputs for HI, GO, LO, and IP56 front protection.

| Brand | Autonics |
| Product Type | Digital Panel Meter |
| Model Number | MT4W-AA-40 |
Autonics MT4W-AA-40 Digital Panel Meters with Diverse I/O – Technical Specifications
| Specification | Value |
|---|---|
| Display method | 4-digit 7-segment LED |
| Character height | 14.2mm |
| Max. display Range | -1999 to 9999 |
| Measurement | AC current, Frequency |
| Input specification | 0-5A, 0-2.5A, 0-1A, 0-500mA, 0-250mA, 0-100mA, 0-50mA |
| AC Measurement | Average value (AVG), Root mean square value (RMS) |
| Power supply | 100-240VAC~ 50/60Hz |
| Output_Main Output(Comparative Value) | Relay (HI, GO, LO) |
| Output_Sub Output(Display Value) | PV transmission(DC4-20mA) |
| Display accuracy | • 23℃±5℃ - ± 0.3 % F.S. rdg ± 3 digit (frequency: ± 0.1 % F.S. rdg ± 2-digit)• -10℃ to 50℃ - ± 0.5 % F.S. rdg ± 3-digit |
| A/D conversion method | ΣΔ (Sigma Delta) ADC |
| Sampling cycle | 16.6ms |
| Hold function | Includes (external hold function) |
| Environment_Ambient temperature | -10 to 50℃, storage: -20 to 60℃ |
| Environment_Ambient humidity | 35 to 85% RH, storage: 35 to 85% RH |
| Insulation type | Double insulation or reinforced insulation(mark: @(INS), dielectric strength between the measuring input part and the power part: 1kV) |
| Protection structure | IP56 (front part, IEC standard) |
| Unit weight (packaged weight) | ≈ 211 g (≈ 326 g) |
The Autonics MT4W-AA-40 Digital Panel Meters with Diverse I/O is designed for AC current and frequency monitoring in industrial automation systems. It features a 4-digit 7-segment LED display with a -1999 to 9999 display range and operates on a 100–240VAC power supply. This model is part of the MT4W Series and uses relay outputs for HI, GO, and LO status signaling within control panels.
In industrial automation environments, the MT4W-AA-40 Autonics Digital Panel Meters with Diverse I/O is applied in conveyors, packaging equipment, automated production lines, and assembly panels. It allows operators to monitor current and frequency values clearly while supporting stable relay-based outputs for alarms and control logic. The IP56-rated front structure supports consistent panel mounting under routine industrial conditions.
The Autonics MT4W-AA-40 digital panel meter provides dependable electrical indication aligned with industrial panel requirements. With defined AC current and frequency measurement, standard AC power input, and protected front construction, it supports reliable automation performance. Positioned within the MT4W Series and supported by Autonics manufacturing standards, this model suits industrial applications across India requiring consistent monitoring and control reliability.




