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Mounts directly to 4 inch square electrical with a minimum depth of 2 1/8 inches
Sealed against dirt
The net effect is response speed greater than five times that of other designs
EOL Resistance: 47K Ohms
System Sensor 5251H Intelligent High Temperature Thermal Detector System Sensor 2551 Mounts directly to 4 inchThese sensors are designed to provide open area protection with 50 foot spacing capability as approved by UL 521. Model 5251B is a fixed temperature sensor with a 135F fixed temperature alarm. Model 5251RB is a rate of rise temperature sensor with a 135F fixed temperature alarm. Model 5251H is a high temperature sensor with a 190F fixed temperature alarm. Two LEDs on each sensor light to provide 360 visibility of the sensor indication. The LEDs can be
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