Amprobe AMB-5D Insulation Tester: accurately measures insulation resistance up to 10 GΩ, ensuring safety and reliability of electrical systems. Test continuity of circuits and measure AC voltage, making it versatile for various electrical tasks. Features manual and 3-minute test power lock modes for efficient testing. Auto power-off conserves battery life. Ideal for testing motors, cables, power tools, and small appliances, helping maintain electrical safety and prevent costly breakdowns.