Gamewell-FCI MCS-COF3 — plug-in addressable multi-criteria detector in bright white that provides both fire detection and UL 2075 life-safety carbon monoxide detection from a single SLC address.
The MCS-COF3 combines four separate sensing elements — photoelectric smoke, an electrochemical carbon monoxide cell, infrared light/flame, and thermal (135°F fixed-temperature threshold plus rate-of-rise) — and weighs them with sophisticated algorithms. The result is enhanced sensitivity to real fire with heightened immunity to nuisance particulate such as theater smoke, which makes it suitable for areas where single-sensing detectors tend to false alarm. The CO cell produces a separate life-safety signal, so a fire alarm and a CO alarm are annunciated as distinct events. Both smoke and CO sensors are drift-compensated automatically, and the CO cell provides a 10-year service life with an end-of-life warning. The detector head ships without a base; B200S series intelligent sounder bases are recommended so the device can sound Temp 3 for fire and Temp 4 for CO at the detector itself.
Specifications
| Type |
Addressable multi-criteria fire/CO detector (smoke, CO, light/flame, heat) |
| Protocol |
Velociti® SLC protocol; uses one address on the SLC loop |
| Color |
Bright white (MCS-COF3-IV is the ivory version) |
| Operating voltage |
15 to 32 VDC |
| Operating current @ 24 VDC |
200 µA (one communication every 5 seconds, green LED blink on communication) |
| Maximum alarm current |
2 mA @ 24 VDC (one communication every 5 seconds, red LED solid on) |
| Maximum current |
4.5 mA @ 24 VDC (one communication every 5 seconds, amber LED solid on) |
| Isolator load rating |
0.0063 |
| Operating temperature |
32°F to 100°F (0°C to 38°C) |
| Operating humidity |
15% to 90% RH, non-condensing |
| Air velocity |
0 to 4,000 ft/min (0 to 1219.2 m/min) |
| Height |
2.7 in. (69 mm) installed in a B200S series sounder base |
| Diameter |
6.875 in. (175 mm) installed in a B200S series sounder base |
| Weight |
3.4 oz. (95 g) |
| CO alarm thresholds (UL) |
70 ± 5 ppm: 60–240 min.; 150 ± 5 ppm: 10–50 min.; 400 ± 10 ppm: 4–15 min. response time |
| Standards |
UL 268 7th Edition; UL models meet UL 268 7th Edition and UL 521 fire requirements and UL 2075 for system-connected life safety CO detection |
| Listings |
UL S1195; CSFM 7272-1703:0508 |
| Country of origin |
Mexico |
Installation notes
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Base not included: the data sheet lists bases as separate order items. B200S series intelligent sounder bases (B200S-WH, B200S-IV, and the low-frequency B200S-LF versions) are the recommended pairing because they produce the separate Temp 3 fire / Temp 4 CO patterns.
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Narrow temperature window: 32°F to 100°F (0°C to 38°C) — noticeably tighter than a plain photoelectric detector such as the ASD-PL3, because of the CO cell. Do not use it in unconditioned spaces that swing outside that band.
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One address: all four sensing elements plus the CO signal report through a single SLC address.
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CO cell life: the cell is rated for 10 years and issues an end-of-life warning and fault; the CO function must be replaced at that point.
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CO testing: the detector supports RealTest® CO testing capability.
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Synchronization: B200S series bases recognize the System Sensor synchronization protocol, so they can be part of the general evacuation signal when driven by a panel or power supply output that generates those pulses.
Related models
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MCS-COF3-IV — identical detector in ivory, for legacy ivory installations
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ASD-PL3 — photoelectric-only Velociti Series 3 detector, wider 32°F to 122°F range, no CO or IR sensing
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B200S-WH / B200S-LF-WH — intelligent addressable sounder base, standard and low-frequency, the recommended base for this detector
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B224RB-WH / B224BI-WH — relay base and isolator base options listed for this detector
Specifications taken from the Gamewell-FCI data sheet "MCS-COF3 and MCS-COF3-IV Multi-Criteria Fire/CO Detector," document 9021-61099 Rev. A (04/19). Manufacturer specifications are subject to change without notice.
