UV Sensor ( Model UV - 01 -AJ ) : Specially designed for harsh industrial environment this model of UV Sensor provides good viewing of the flame and is also easy to maintain. The sensor is enclosed in a metal jacket ensuring mechanical protection. UV Flame Amplifier / Relay (Model UV - FR - 01 ) : The amplifier is used in conjunction with UV Flame Sensor and assists in detection of gas, oil, coal and other types of flames. The Amplifier is a stand alone unit with Two Potential Free relay contact outputs. The outputs are rated at 230 V AC, 5 Amps. The front panel of the amplifier indicates SUPPLY ON and with turn 'on' as soon as the supply is given. Model UV - FR – 21 : This models has adjustable time delay of 2 - 8 seconds thus being useful for installations with high flicker situation. The amplifier we offer is designed to work with our UV Sensor UV – 01 and also suits UV Sensors of various other makes. The prime thing to note for compatibility is that the UV Sensors of other make is rated 230 V AC rms.