Model AP-20S Gas Detection Pump Kit Back Catalog number: 830-0001-01 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 200263 LFS WHITE BAND VALVE ( EACH) Price on request 811-0507-01-R Power Adapter, Universal Wall w/USB A to USB B cab Price on request 811-9917-01 Go-Cal Replacent Filter Price on request