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The Honeywell R7851B1000/U is a solid state plug-in flame signal amplifier designed for use with 7800 Series relay modules. It features a 2.0 or 3.0 second flame failure response time and Ampli-Check self-checking capabilities. This amplifier responds to flame detector inputs to indicate flame presence, with flame signal strength ranging from 0.0 to 5.0 VDC. It is compatible with optical (UV, Visible light) C7927 and C7962 flame sensors for gas, oil, and coal applications.
Solid state plug-in amplifier with Ampli-Check self-checking and 2.0 or 3.0 second flame failure response time.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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