Security Door Controls MD-31DOW Request-to-Exit PIR Motion Detector is a sophisticated passive infrared sensor tailored for effective request-to-exit applications. With an adjustable timer ranging from 1 to 60 seconds, this device ensures optimal performance tailored to your specific needs. The MD-31DOW supports dual voltage of 12/24 VAC/DC and features a field-selectable fail-safe or fail-secure mode, enhancing its versatility in various security setups. Designed to project a unique "U" pattern that inhibits tampering, the coverage field can be adjusted to suit installation heights from 7 to 15 feet, creating a reliable detection zone of up to 10’ x 12’ at 15 feet high. Compliant with national fire and building codes, including IBC and NFPA standards, this motion detector prioritizes safety and regulatory adherence. Constructed from high-impact ABS plastic and available in a clean white finish, the MD-31DOW is not only durable but also blends seamlessly into its environment. It weighs just 0.5 lbs and offers a current draw of 26 mA (max), making it an efficient choice for access control systems. Whether mounted on a wall, ceiling, or frame header, the MD-31DOW delivers reliable performance and peace of mind.

Request-to-Exit PIR Motion Detector, 1-60 Second Adjustable Timer, Field Selectable Fail Safe or Fail Secure Mode, Dual Voltage 12/24VAC/DC, White

SDC’s MD-31D series motion sensors are passive infrared detector specifically designed for request-to-exit applications. The coverage field is internally pointable. When angled 14 degrees down, coverage may be 5’ x 6’ at 7’ feet high for 10’ x 12’ at 15’ high. The MD-31D projects a wrap around "U" pattern down and away from the door to inhibit tampering. The MD-31D complies with national fire and building code requirements for access controlled egress doors listed below:

• IBC International Code 1008.1.3.4
• IFC International Fire Code 1008.1.3.4
• NFPA 101 Life Safety Code 7.2.1.6.2
• NFPA 1.15.5.3.2
• BOCA National Building Code 1017.4.5
• SBCCI Standard Building Code 1012.7

Features:

• Passive infrared detection
• Relock time delay (RTD)
• Frame header, wall or ceiling mount
• Complies with NFPA applications
• Code compliant failsafe mode
• Auto-sensing dual voltage

Models:

• MD-31DOW: PIR motion sensor, white
• MD-31DB: PIR motion sensor, black

MD-31DOW Specifications:

• Housing: High impact ABS plastic, white
• Dimensions: 7" x 1-3/4" x 1-7/8"
• Mounting Height: 7’ - 15’
• Operating Environment: -20°F - 120°F
• Weight: 0.5 lbs
• Input: 12/24 VAC/DC
• Current Draw: 26 mA (max)
• Contact: SPDT (2)
• Rating: 1 Amp @ 30 VDC resistive
• Type: Electronic timer, adjustable (1-60 seconds)

MD-31DB Specifications:

• Housing: High impact ABS plastic, black
• Dimensions: 7" x 1-3/4" x 1-7/8"
• Mounting Height: 7’ - 15’
• Operating Environment: -20°F - 120°F
• Weight: 0.5 lbs
• Input: 12/24 VAC/DC
• Current Draw: 26 mA (max)
• Contact: SPDT (2)
• Rating: 1 Amp @ 30 VDC resistive
• Type: Electronic timer, adjustable (1-60 seconds)