Comparison : Item # SD85, SD85 Discontinued. See S500-A6 replacement
Item # RP2307B, 12 Volt Push/Pull DC Solenoid
Item # RP2308B, 24 Volt Push/Pull DC Solenoid
Item # RP2309B, 12 Volt Push/Pull DC Solenoid
Item # RP2310B, 24 Volt Push/Pull DC Solenoid