> Flame failure response time (FFRT) of 0.8 or 1 second or 2.0 or 3.0 seconds, depending on the amplifier and relay module selected > Plug-in to 7800 SERIES Relay Module through printed circuit board edge connector keyed for proper orientation > Flame signal test jacks measure amplifier flame signal voltage > 0.0 to 5.0 Vdc Flame signal strength reading range > Color coded label identifies flame detection type
