Description
The Door Contact MK4 is a magnetic door sensor designed to detect door openings in server rooms, industrial environments, and access control systems. It features a 2m connection cable and a galvanically isolated dry contact relay output, making it compatible with Poseidon, Damocles, and HWg-Ares devices. The sensor ensures real-time monitoring of unauthorised access and can be integrated with LAN or IP-based security systems for remote alerts.
Features
- Magnetic door contact sensor for open/close detection
- 2m connection cable for flexible installation
- Dry contact relay output (NO/NC) for integration with HWg monitoring devices
- Galvanic isolation for safe and interference-free operation
- Compact design for rack, cabinet, and door monitoring
Technical Specifications
Specification | Details |
|---|---|
| Detection Type | Door Opening Detection |
| Output Type | Relay NO/NC |
| Output Load Voltage | 50V |
| Output Load Current | 500mA |
| Galvanic Isolation | Yes |
| Cable Length | 2m |
| Operating Environment | -20°C to 80°C / 0–100% RH |
| Storage Environment | -30°C to 60°C / 5–95% RH |
| Dimensions | 12 × 51 × 10 mm / 50g |
| Protection Rating | IP40 |
| Installation Options | Rack-mounted, Wall-mounted |
| Connector Type | Terminal Block |
| Warranty | 24 months |
Applications & Usage
- Rack cabinet monitoring in data centres and IT infrastructure
- Security access monitoring for restricted areas
- Industrial door status detection for warehouse security
- Remote alerting when connected to Poseidon, Damocles, or HWg-Ares
Why Choose the Door Contact MK4?
The Door Contact MK4 provides accurate, real-time door opening detection with seamless integration into HW group monitoring systems. Its compact design, galvanic isolation, and dry contact relay output make it an ideal solution for security and access control applications.



















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