The Honeywell R7847A1025 0.8 OR 1 SEC Flame FAILURE RESPONSE TIME. Datasheet Overview Solid-state plug-in flame amplifier for flame detection in gas burners using rectifying flame rods. Engineered for use with Honeywell 7800 Series and R7140 relay modules (primary safety controls). Key Features Flame Failure Response Time (FFRT): Options for 0.8 or 1.0 second response to flame failure Signal Range: 0.0 to 5.0 Vdc flame signal strength via test jacks. Connector: Printed circuit board (PCB) edge connector, keyed for correct orientation into Honeywell 7800 Series relay modules. Detection Type: Rectification (green-labeled). Works with rectifying flame rods: C7004, C7005, C7007, C7008, C7009, Q179 Color Coding: Green label for rectification type. Certifications & Safety UL listed (File No. MP268, Guide No. MCCZ). Factory Mutual (FM) approved. Meets relevant safety standards for flame safeguard systems. (Can mention SIL-3 capability when used with appropriate detectors/relay modules). Applications Industrial and commercial gas boilers and burners that require safety flame detection using rectifying flame rods. Replacement or maintenance of Honeywell 7800 Series burner safety controls. Technical Specifications Spec Value Flame Failure Response Time (FFRT) 0.8 or 1.0 second Flame Signal Voltage Range 0.0 – 5.0 Vdc Flame Detector Compatibility Rectifying flame rods: C7004, C7005, C7007, C7008, C7009, Q179 Relay Module Compatibility Honeywell 7800 Series; R7140 series Self-Check Capability None (standard rectification type) Ambient Operating Temp −40°F to 140°F (−40°C to 60°C) Humidity / Environmental Operating up to 85% RH non-condensing; vibration environment etc. Color / Label Green (rectification type) Dimensions / Weight (Use your actual product dimensional & weight data) — Typical from spec sheets: see manufacturer doc.