ALM-CH16 fault annunciator is installed on the cabinet panel. They are simple, compact, and can improve wiring efficiency. They are universal alarms suitable for power control and monitoring systems. The alarm uses a highly reliable MCU to monitor external status in real-time. When an abnormality occurs, the corresponding indicator light on the panel lights up, the buzzer sounds an alarm, and the alarm relay responds quickly.
The alarm can be muted, reset, tested, etc. by pressing buttons. The product supports optional RS-485 digital interface communication (using MODBUS-RTU communication protocol).
Customizable or replaceable alarm light labels;
Reliable passive relay contact outputs;
Centralized alarm output for multiple signals;
Self-fault alarm with normally closed contact;
The sound alarm interface supports external devices;
Flexible alarm confirmation logic with real-time updates;
Modular design for easy installation and maintenance

Parameter | Details |
Operating voltage | 110VDC, 220VDC, 110-220VAC/DC, (±10~15%) |
Rated power | ≤8W |
Fault signal inputs | 16 channels |
Response time | ≤100ms |
Flashing frequency | >1Hz |
Relay outputs | 3*contact capacity: 5A@250VAC, 0.5A@110VDC, 0.3A@220VDC |
Panel protection level | Front: IP54; Rear: IP20 |
Communication | RS485 Modbus RTU |
Indication method | LED indicator or illuminated text panel |
Insulation performance | 2.5 kV AC RMS 1 minute, between input / output / case / power supply |
Operating environment | Temperature: -20°C ~+60°C; Humidity: Annual avg. ≤75%, max ≤93% |
Wiring terminal | 0.2...2.5mm² |
Working cycle | 100% |
Installation method | Panel mount |
Dimension | 96x96 mm |



- Power generation and distribution systems;
- Industrial manufacturing and production facilities;
- Oil, gas, and petrochemical processing plants;
- Data centers and server farm operations;
- Railway, aviation, and maritime transportation systems;
- Heating, ventilation, and air conditioning (HVAC) systems.
- security burglary or theft fire machine failure of malfunction medical process monitoring (such as: heat and temperature, power and power surge, computer systems, gas monitoring, and water level and leak monitoring) power distribution personal safety (or confined space monitoring) smoke structural failure vehicle safety other unlisted, specialized, or proprietary applications



We are based in Chongqing, China, start from 2013, sell to Southeast Asia(20.00%), Western Europe(15.00%), Northern Europe(10.00%),Domestic Market(10.00%), Oceania(10.00%), Africa(10.00%), North America(10.00%), Eastern Europe(10.00%), South America(5.00%). There are total of about 11-50 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3. what can you buy from us?
Energy Meter , Power Meter , Temperature sensor , multimeter, Transducer
4. why should you buy from us not from other suppliers?
Specialized focused on electrical industry automatic monitoring & temperature recording; Have 13 years of ODM&OEM experience; Professional sales team can help you find the product that meets your needs
5. what services can we provide?
Accepted Delivery Terms: FOB, CFR, CIF, EXW
Accepted Payment Currency:USD, EUR;
Accepted Payment Type: T/T, L/C, Western Union, Escrow;
Language Spoken: English,Spanish, Japanese