Model MRI-2251TMB is a photoelectric smoke detector with supplementary 135°F thermal. Also known as Acclimate™, it uses advanced on-board software to combine the signals from the photo and thermal elements. The MRI-2251TMB is a true multicriteria detector capable of rejecting nuisance sources, but still responding quickly to real fires. Acclimate has the capability of adjusting its sensitivity according to the type of environment that it is installed in.
Intelligent Low Profile Detectors Features:
• Sleek, low profile design
• Detectors are equipped with a built-in analog communications module
• Smoke detectors are available with photoelectric or ionization technology
• Photoelectric detectors are available with additional fixed temperature detection
• Heat detectors are available as fixed temperature or fixed temperature with rate-of-rise detection
• Dual LEDs indicate communications and activate steady when in alarm
• Low profile base provides easy interchangeability
• Low standby current
• Rotary address switches
• Magnetic test feature
• Superior EMI protection
• Sealed against dirt, insects, and back pressure
Mounting Bases Features:
• Bases enable quick and secure detector plug-in
• SEMS screws provide easy wiring connection
• Support for 12-24 AWG provides installation flexibility
• Multiple accessory options provide mounting flexibility
• Sounder bases are compliant with UL 464 and UL 864 Diameter
Intelligent Low Profile Detectors Specifications:
| Voltage Range | Thermal Ratings | ||
| 15 – 32 volts DC peak | Fixed Temperature Setpoint: 135°F (57°C) Rate of Rise Detection: 15°F/min. (8.3°C/min.) High Temperature: 190°F (88°C) | ||
| Standby Current | |||
| Ion/Thermal: 150 uA @ 24 VDC (without communication, LED off) 200 uA@ 24 VDC (one communication every 5 sec. with LED enabled) |
|||
| Operating Temperature Range | |||
| Ion/Photo: 32°F to 120°F (0°C to 49°C) Photo with Thermal: 32°F to 100°F (0°C to 38°C) Thermal: -4°F to 100°F (-20°C to 38°C) High Temperature: -4°F to 150°F (-20°C to 66°C) Pinnacle: 32°F to 100°F (0°C to 38°C) |
|||
| Photo/Photo with Thermal: 250 uA @ 24 VDC (without communication, LED off) 300 uA@ 24 VDC (one communication every 5 sec. with LED enabled) |
|||
| Pinnacle: 230 μA @ 24VDC (without communication) 330 μA @ 24VDC (one communication every 5 sec. with LED enabled) |
|||
| UL Listed Velocity Range | |||
| Ion: 0 – 1200 fpm (0 – 6.1 m/sec) Photo/Photo with Thermal: 0 – 4000 fpm (0 – 20 m/sec) Pinnacle: 0 – 4000 fpm (0 – 20 m/sec) |
|||
| LED Current (max.) | |||
| 6.5 mA @ 24 VDC (on) | |||
| Insect Screen Hole Size | |||
| Height | |||
| Photo: 0.016 inch (0.41mm) nominal Ion: 0.035 inch (0.89mm) nominal | |||
| 2.0 inches (51 mm) 1.66 inches (42 mm) – Pinnacle |
|||
| Self Diagnostics (PinnacleTM) | |||
| Diameter | |||
| Initiated by control panel Activated by test magnet | |||
| 6.1 inches (155 mm) Installed in B210LP Base 4.1 inches (104 mm) Installed in B501 Base 4.0 inches (102 mm) – Pinnacle |
|||
| Smoke Sensitivity (PinnacleTM) | |||
| 9 levels: 0.02, 0.03, 0.05, 0.10, 0.20, 0.50, 1.00, 1.50, 2.00%/ft. obscuration (0.06, 0.10, 0.16, 0.33, 0.66, 1.65, 3.24, 4.85, 6.41%/m obscuration) |
|||
| Shipping Weight | |||
| Heat: 4.8 oz. (137 g) Photo/Photo with Heat: 5.2 oz. (147 g) Ion: 5.4 oz. (154 g) Pinnacle: 5.6ox. (159 g) |
|||
| Drift Compensation (PinnacleTM) | |||
| High sensitivity maintenance alert signal Low sensitivity maintenance alert signal Maintenance urgent signal | |||
| Relative Humidity | |||
| 10% – 93% non condensing | |||
Mounting Bases specifications:
B224RB/B224BI Electrical Ratings
|
B200SR Electrical Ratings
|
