Edwards 281B S/F 19/09 and 135 ohm modulating controllers
$429.50
Description
and 135 ohm modulating controllers
NOTE: Use with System Sensor SB-I/O backbox (not included)
and audio amplifiers mount in the same enclosures as other EST3 equipment
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Edwards 281B S/F 19/09 and 135 ohm modulating controllersThis model is a conventional heat detector with a fixed temperature of 135F (57C) and rate of rise capability. It is designed for use in dry, indoor environments and has a recommended coverage area of up to 2,500 square feet (approximately 232 m) with detector spacing up to 50 feet (15. 2 meters) per UL guidelines.
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