MR52 Two Reader Expansion Module (ADC-AC-MR52) - Data Sheet
Alarm.com’s Smarter Access Control is an ideal solution for businesses ranging from small shops to large commercial properties. The Two Reader Expansion Module is designed to add two extra readers to an Alarm.com Mercury Series door controller. Each ADC-AC-MR52 adds two reader ports, six relay outputs, and eight programmable inputs to the system. Connect the expansion module to the controller using a shielded, RS-485 twisted pair.
For larger commercial installations, Single and Two Reader Expansion Modules can be daisy-chained together.
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Expansion Module features
- Provides all I/O needed for two doors each using one reader
- Eight programmable inputs
- Two reader inputs
- Six relay outputs
- For use with Alarm.com Mercury Series Door Controllers
Smarter Access Control benefits
- Scan-to-add card format and serial detection
- Control doors and manage users from the Alarm.com Alarm.com app
- Integrated Alarm.com intrusion and video offerings
- User-friendly, flexible scheduling
- Configure hardware using web or app for easy installation
- Plug & play installation — no networking expertise required
Specifications
| Input Power |
12-24 VDC, 550 mA max |
|---|---|
| Output Power | Pass-through or 12 VDC, 300 mA per reader |
| Communication | 2-Wire RS-485 |
| Inputs |
Two dedicated reader inputs Eight programmable inputs One dedicated tamper input One dedicated power monitor input |
| Outputs |
Six relay outputs Normally open contact (NO): 5 A @ 30 VDC Normally closed contact (NC): 3 A @ 30 VDC |
| Certifications |
UL 294 recognized CE compliant RoHS (2011/65/EU & 2015/863) FCC Part 15 Class A California Proposition 65 NIST Certification |
| Dimensions | 6.0 x 8.0 x 1.0” (152 x 203 x 25 mm) |
| Temperature |
32 - 158 °F (0 - 70 °C) operational -67 - 185 °F (-55 - 85 °C) storage |
| Operating Humidity | 0-95% (non-condensing) RH |
Developed with the Authentic Mercury open hardware platform