
Mini LED Digital Display Alternating Hertz Frequency Indicator Tester 22mm. High Brightness LED Display: Features high brightness LED display with cylindrical main body for clear visibility. Wide Application Scope: Suitable for electric power, telecommunication, machine tools, ships, and mining machinery. Multi-Color Options: Available in Red, Green, Yellow, Blue, and White display colors. OEM Service Available: Supports OEM customization, allowing customers to print their logo on products. Fast Delivery: Delivery time is 3-5 days after receiving deposit due to available stock. 18 Months Warranty: Comes with an 18-month warranty for peace of mind and quality assurance. 100% Self-Inspection: All products undergo 100% self-inspection and testing before packing. Compact 22mm Size: Designed with a 22mm mounting aperture for easy installation in panels.