Seafrog VP-100 Vacuum Pump Handle & Alarm Detection System for Underwater Photography - Waterproof Diving Camera Housing Case with Leak Alert - Perfect for Scuba Diving, Snorkeling, and Marine Photography

Specification:Material: Aluminium Alloy+PlasticColor: As picture shownSize: VP-100 Vacuum Pump Handle: Approx. 60*29.4*128mm/2.23*1.16*5.04inVPS-100 Vacuum Alarm: Approx. 30.8*29.7*35mm/1.21*1.17*1.38in14 Interface: Approx. 29*29*20mm/1.14*1.14*0.79in16 Interface: Approx. 29*29*20mm/1.14*1.14*0.79inScrewdriver: Approx. Dia. 3.0mm/0.12inWaterproof Ring A: Approx. 20*1.5mm/0.79*0.06inWaterproof Ring B: Approx. 19*2mm/0.75*0.08inPacking List:1 * VP-100 Vacuum Pump Handle1 * VPS-100 Vacuum Alarm1 * 14mm Interface1 * 16mm Interface1 * Screwdriver1 * Waterproof Ring A1 * Waterproof Ring B1 * Manual

The vacuum pump system is used for checking the water tightness of underwater camera housing before submerging

The complete electronic circuit and the battery are located in the robust anodized aluminum one-way valve body for even more convenient operation and ease of installation

VPS-100 features a calibrated pressure sensor and processor and the The green/red LEDs are visible through the transparent acrylic circular window

The installation is simple and straightforward, just screwing the detector into the accessory port, draw a vacuum on your housing and wait for few minutes, then you can check the water tightness immediately

For Sony A7 III A7R IV III A9, for Panasonic GH5, for Nikon Z6 II Z7II Camera hoursing with Vacuum Pump System Design (More compatible models please check the description)