Air Products and Controls MS-RA is a remote alarm accessory for Air Products and Controls duct smoke detectors. It gives a red alarm LED indicator on a single gang brushed stainless steel wall plate labeled ALARM.
It belongs to the MS Series of remote accessories, used with ADSD, DSD and RW Series duct smoke detectors, and it mounts on a standard single or double gang electrical box. The APC MS Series installation guide also lists SM- and SL-Series duct smoke detectors.
Features
- Red alarm LED indicator, plate labeled ALARM
- Brushed stainless steel wall plate
- Fits single or double gang electrical boxes
- For ADSD, DSD and RW Series duct smoke detectors
Specifications
| Product type |
Annunciator plate |
| Material |
Brushed stainless steel |
| Indicator |
Red LED, alarm |
| Alarm LED current |
13 mA at 24 VDC |
| Wire leads |
6 in. 24 AWG pigtails for the LED |
| Operating temperature |
0°C to 49°C (32°F to 120°F) |
| Mounting |
Single or double gang electrical box |
Compatibility
The MS-RA is the basic remote alarm in the MS Series. Other MS Series versions add features: the MS-RA/R adds a push-button test/reset switch, the MS-RA/P adds a pilot LED, and the MS-RD is a remote trouble indicator. Check the duct detector installation guide for wiring.
FAQ
What does the MS-RA indicate? It shows a red alarm LED on a plate labeled ALARM when the connected duct smoke detector is in alarm.
What box does it mount on? A standard single or double gang electrical box. The single gang box size is 4-1/2 in. high by 2-3/4 in. wide.
Does it have a test or reset switch? No. The MS-RA/R version adds a push-button test/reset switch.
Specifications taken from the APC "MS Series Remote Accessories" installation guide. Manufacturer specifications are subject to change without notice.
