Suprema Door Module DM-20 Secure Multi Door I/O Expansion
DM-20, interface-module, 4 Form C Relays, RS-485 OSDP
Suprema Door Module (DM-20) provides secure control of up to 4 doors with encrypted RS-485 communication, 2 Wiegand reader inputs, 4 supervised inputs, and 4 relay outputs.
Product Overview
DM-20 allows expansion of Suprema access control systems across 4 additional doors. Connecting via RS-485 daisy-chain to master controllers like CoreStation, it interfaces with Wiegand readers, door sensors, electric strikes, and tamper switches.
Why Buy This Product
Enhanced Security
Prevents lock tampering by keeping relays on the interior secure side.
High-Density Expansion
Adds up to 372 inputs or 372 outputs per RS-485 communication line.
Elevator & Fire Linkage
Automates elevator floor access control and emergency fire door releases.
Best for These Applications
High-Rise Commercial Buildings
Ideal for multi-floor elevator access control and riser monitoring.
Industrial Facility Automation
Perfect for monitoring perimeter fence sensors and panic buttons.
Key Advantages
- Encrypted Bus Safeguard:OSDP V2 encrypted communication shields control signals from tampering.
- Fail-Safe Linkages:Hardware-level linkages maintain local alarm trip functionality even if offline.
Frequently Asked Questions
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Weight | 0.22 |
| Shipping Weight | 0.35 |
| Module Type | interface-module |
| Input Voltage | 12 VDC |
| Relay Outputs | 4 Form C Relays |
| Supervised Inputs | 4 |
| Relay Count | 4 |
| Cpu | Cortex M3 72MHz |
| Memory | 128 KB Flash + 20 KB SRAM |
| Communication Interfaces | RS-485 (OSDP V2) |
| Operating Temp | -20°C ~ 60°C |
| Dimensions | 130 x 90.5 x 35.8 mm |
| Stock | 7 |
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