Suitable for 6-24V DC circuits. Insulated body with test light. Probe tip is covered with protective plastic cap. Tester illuminates when voltage is present. Supplied with cable and alligator earth clip. ONE YEAR GUARANTEE FROM A REPUTABLE UK COMPANY – Founded in 1978, Sealey is a large family run business with a vast product range. Trusted by professionals, all Sealey products are thoroughly tested and backed by unrivalled aftersales service.