White-Rodgers 50D50-842 Direct Spark Control, Universal, 18-24VAC

White-Rodgers 50D50-842 Direct Spark Control Module.
The 50D50-842 is a universal replacement Direct Spark control designed for maximum compatibility with existing systems.
It features:
• A card port and eight program keys to select the Trial for Ignition Time, Retries, Prepurge and Recycle timings.
• A Jumper to accommodate systems using Direct Sense (sensing through igniter) or Indirect Sense (using a Flame Sensor)
• LED indicator for quick system and module diagnostics and troubleshooting.
SPECIFICATIONS
ELECTRICAL RATINGS: Input Voltage: 18 to 30 VAC, 60 Hz
Current: 0.2 amp + MV @ 25OC
Relay Contact Ratings: Main Valve Relay: 1.5 amp @ 25 VAC 60 Hz
Spark Output: Gap: 0.1" - 0.2", 15kV 25Hz
Max cable length: 3ft (0.9m)
Flame Current Requirements: Minimum current to insure fl ame detection: 2 μA DC* Maximum current for non-detection: 0.2 μA DC
Maximum allowable leakage resistance: 100 M ohms
* Measured with a DC microammeter in series with the flame probe lead
OPERATING TEMPERATURE RANGE: -40° to 175°F (-40° to 80°C)
HUMIDITY RANGE: To 95% relative humidity (non-condensing)
MOUNTING: Surface mount or 4" x 4" junction box
GASES APPROVED: Natural, Manufactured, Mixed,
Liquid Petroleum, and LP Gas Air Mixtures.