BAPI BA/DMA : Door Monitor Alarm (DMA)
The BAPI Door Monitor Alarm (DMA) is a 24-volt door-status monitor that uses tri-color LEDs and an audible annunciator to show whether a door is closed, open, or open beyond a user-set time period.
The DMA mounts to a solid surface near the door and connects to a normally closed (NC) door switch. When the door opens, the face LEDs change color and both auxiliary relays energize to drive a building automation system or user-supplied warning device. If the door stays open longer than the user-selected interval, an internal audible annunciator sounds. It is built for mechanical rooms, electrical enclosures, and secure access points where clear door-status awareness matters.
Specifications per BAPI datasheet rev. 06/05/24 and Installation & Operations rev. 09/02/21.
Best For
- Mechanical and electrical room door monitoring
- HVAC equipment enclosures and access panels
- Restricted or secure access areas
- Facility safety, security, and maintenance alerts
Key Features
Technical Specifications
| Specification | Detail |
|---|---|
| Power | 24 VAC or 24 VDC (UL Listed Class 2 Power Source only) |
| Power Consumption (max) | 7.5 VA @ 24 VAC, 200 mA @ 24 VDC |
| Door Switch Contacts | NC = door open is alarm; NO = door closed is alarm |
| Auxiliary Relays | Two relays, 1.0 A @ 30 VAC/VDC, NO or NC dry contacts |
| Audible Annunciator | 90 dB; 2,730 Hz |
| Door Timer Interval | User-selectable rotary switch; minutes or seconds (test) |
| Wiring | 16 to 22 AWG |
| Operating Temp | 32 to 140 °F (0 to 60 °C) |
| Operating Humidity | 5 to 95%, non-condensing |
| Enclosure Material | UV-resistant Polycarbonate, UL94 V-0 |
| Enclosure Rating | IP66, NEMA 4 |
| Dimensions | 5.00 x 4.11 x 2.50 in (127 x 104.4 x 63.5 mm) |
| Agency | CE EN 61326-1:2013 EMC, UL94 V-0, RoHS |
| Warranty | 5 Years |
Documentation
Related Products
Frequently Asked Questions
What voltage does the BAPI Door Monitor Alarm require?
The DMA runs on 24 VAC or 24 VDC from a UL Listed Class 2 power source, drawing up to 7.5 VA or 200 mA.
How does the DMA show door status?
Face LEDs indicate status at a glance: solid green when closed, flashing amber when open within the set time, and flashing red when the door has been open too long.
Can the DMA signal a building automation system?
Yes. Two auxiliary relays rated 1.0 A @ 30 VAC/VDC energize whenever the door opens, providing dry-contact outputs to a BAS or user-supplied warning device.
How long can a door stay open before the alarm sounds?
The open-time delay is set on the rotary switch. A test mode changes the interval from minutes to seconds for quick verification.
What door switch does the DMA need?
A normally closed (NC) door switch, such as the BA/DMA-RSW1 press-fit magnetic reed contact or the BA/DMA-RSW2 surface-mount mechanical switch.
What is the enclosure rating?
The DMA uses a UV-resistant polycarbonate enclosure rated IP66 / NEMA 4 with a UL94 V-0 flammability rating.
5-Year Limited Warranty
Building Automation Products, Inc. (BAPI) warrants the Door Monitor Alarm (DMA) against defects in materials and workmanship for five (5) years from the date of shipment. During the warranty period, BAPI will repair or replace, at its option, any product that proves defective under normal use and service.
This warranty does not cover damage from improper installation, misuse, alteration, or operation outside published specifications. Refer to the manufacturer documentation for full warranty terms and conditions.
