Command Access CAT Field Tester, Lightweight Portable Power Source The Command Access Field Tester is a lightweight portable power source for field testing Mortise & Cylindrical locks, Motorized and Solenoid driven exit devices, & Electric exit trim that require 12-24VDC voltage. It is the perfect tool installers who work regularly with electrified hardware, whether you want to test your installation. Or a great way of troubleshooting when your hardware is not working properly to quickly diagnose the issue! Lightweight Portable Power Supply & Continuity Tester for Electrified Locking Hardware Ideal for Testing New Installation or Troubleshooting Existing Ones Adjustable Voltage Range: 11-30V Continuity Tester with Built-In Beeper & LED. Powerful Enough to Activate Solenoid (w/PM300) & Motorized Latch Retractions Exit Devices Specifications Adjustable Voltage Range – 12 to 24 VDC LED Voltage Display Continuity Terminal with LED & Beeper for Testing Signal Switches & Hinges Works with Cordless Drill Battery: DeWalt®, Makita®, Milwaukee® Batteries Toggle Push Button 1 Sets of Alligator Clips Included + CAT Connector Harness Models CATFT-DW: Field voltage tester 11-28V & continuity, works with DeWalt® 20V battery CATFT-ML: Field voltage tester 11-28V & continuity, works with Milwaukee® 18V battery CATFT-MK: Field voltage tester 11-28V & continuity, works with Makita® 18V battery