Lowell RPSB2-MKR Momentary Single Pole Single Throw Low-Voltage Rackmount SwitchLowell RPSB2 MKR Momentary Single Pole Single Throw Low Voltage Rackmount Switch Single pole single throw (SPST) low voltage switch mounted in a rackmount panel features MOMENTARY closure for applications where multiple switches will activate equipment connected to a remote power control or sequencer (order separately). Key Features 1U x 19 in. wide rackmount panel with mounted switch MOMENTARY closure Rear connection termination strips Key switch Two