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DM-20

DM-20


A. The door control module controls Wiegand readers and various I/O devices.

1. Capable of controlling up to 62 Wiegand readers when connected as daisy-chain via RS-485.

B. Provides various Interfaces.

1. RS-485, TTL Input/Output, Wiegand, Relay, Supervised Input.

FEATURES

A. Door control with multiple inputs and outputs.

B. Control the connected Wiegand reader’s LED, Buzzer, Tamper, and more.

C. Detect 4 states such as ON, OFF, Open and Short with 4ch Supervised Inputs.

D. RS-485, TTL Input/Output, Wiegand, Relay, Supervised Input.



 

SPECIFICATIONS 

Category 

Feature 

Specification 

General 

CPU 

Cortex M 32Mhz  

Memory 

Flash 128KB, SRAM 20KB 

LED 

Multi-color  

- Power 1ea 

- Relay 4 ea 

- TTL Input 4 ea 

- Supervised Input 4ea 

- TTL Output 6ea 

- RS-485 2ea 

- Run 1ea 

Operating temperature 

-20°C ~ 60°C 

Storage temperature 

-40°C ~ 70°C 

Storage humidity 

0% ~ 90%, non-condensing 

Dimension (W x H x D) 

130 mm x 90.5 mm x 35.8 mm 

Certificates 

CE, FCC, KC, RoHS, REACH, WEEE 

Interface 

RS-485 

1ch 

Wiegand 

2ch 

Input 

TTL Input x 4 

Supervised Input x 4 

Output 

TTL Output x 6 

Relay 

4 Relays 

Electrical 

Power 

Voltage: 12 VDC  

Current: Max. 2.5A 

Relay  

Rated load: 0.4 A @ 125 VAC, 2 A @ 30 VDC 

Maximum switching voltage: 250 VAC, 220 VDC 

Maximum switching current: 3 A 



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