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The Skil SD561201 is a compact 4V cordless screwdriver built around a non-contact voltage detector. Its Circuit Sensor sounds an alert and lights a red LED when it nears a live wire from up to an inch away, so you can check an outlet or switch before you touch it. A lithium-ion battery recharges over micro USB, and a collar switch sets forward or reverse. It suits homeowners and DIYers doing light assembly and outlet or fixture work who want one tool for driving and a quick safety check. Against plain 4V screwdrivers it trades torque and speed for the voltage sensing; it is not a substitute for a multimeter or a drill for heavy driving.
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Lowest price we've seen: $24.49 on Nov 12 at BenchmarkSupply.com. Tracked across 14 stores since Nov 12.
Rated 4.5 out of 5 from 581 ratings, owners treat it as a handy light-duty driver and like the built-in voltage check. Complaints center on its modest power and the limits of the sensor.
This is a rechargeable 4V cordless screwdriver with Circuit Sensor technology. The patented sensor detects live wires in outlets, switches, cords, and fixtures from up to one inch away. To check a circuit, hold the screwdriver near the source and press the detection button. If the circuit is live, a red light comes on and an alert sounds.
It runs on a rechargeable lithium-ion battery and charges through a micro USB port. Two LED lights illuminate the work area in dimly lit spaces and stay on for 8 to 10 seconds after release. Turning the collar switches between forward and reverse.
