✅ Multi-Function Testing: Works with both 3-wire and 5-wire DC fan motors, as well as common AC compressor drivers from major brands. ✅ Adjustable Speed Control: Built-in speed control knob lets you test fans at different speeds, simulating real working conditions. ✅ Clear Digital Display: Real-time data readout for easy monitoring of motor status and performance. ✅ Plug-and-Play Design: Comes with pre-wired connectors, a standard power plug, and clear wiring labels for fast, error-free connection. ✅ Portable & Durable: Transparent protective casing and a storage pouch included, perfect for on-site service or workshop use. This all-in-one testing tool is designed for technicians to diagnose and test 3-wire/5-wire DC fan motors and multi-brand air conditioner compressors quickly and accurately. It supports most mainstream brands, helping users identify faults, verify motor operation, and confirm compressor functionality without connecting to the original unit. 3-wire/5-wire DC Fan Motor Testing and Fault Detection Tool Fault Detection: Quickly identifies common issues like motor failure, wiring faults, or driver module problems. Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the United States, the Philippines and so on. Voltage: AC100-240V Color: As Shown Material: plastic Package Contents: 1 x Air Conditioner Compressor & Fan Motor Tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.