1251B(2009) Datasheet - Systemsensor advanced ideas.

200 Series Intelligent Low Profile Plug-in Detectors

Detector sensitivity can be programmed in the control panel software. Sensitivity is continuously monitored and reported to the panel. Point ID capability allows each detector address to be set with decade address switches to provide exact detector locations for selective maintenance when chamber contamination reaches an unacceptable level.
The System Sensor 2251B photoelectric detector’s unique optical sensing chamber is engineered to sense smoke produced by a wide range of combustion sources. Dual electronic thermistors add 135°F fixed temperature thermal sensing on the 2251TB model.

FEATUREs
• Sleek, low-profile design
• Analog communications
• Low standby current
• Rotary address switches
• Superior EMI protection
• Dual LEDs for 360° visibility