PT2 – Time Delay Relay 30A – 12VPrevents dead batteries from add-on equipment, maximizing operational readiness and saving maintenance costs.Delivers power to equipment after engine off or at the end of shift (video downloads), automatically timing off and optionally if battery voltage is low.Protects sensitive on-board electronics via under-voltage and over-voltage shutdown.This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications:Type: ElectricBox Dimensions: 2″H x 5″W x 6″L WT: 0.3 lbsUPC: 850035199916Brochure (pdf)