General Tools KT5 Electrical Trouble Shooting Kit, 3 pcs set (GFCI Tester, Non-Contact Voltage Detector & Smart Multimeter), Ideal for Checking Outlets and Wiring, Measures AC/DC Voltage KNOWLEDGE IS POWER- Know when to test your home or apartments wiring. All outlets should be tested before moving in or purchasing a new home. If your home is older than 40 years old, you rely on extension cords for power or you are making home improvements and adding major appliances that can strain your electrical system you should test your outlets IDENTIFY PROBLEMS IN YOUR WIRING- GF1302 GFCI OUTLET TESTER- detects faulty wiring in 3-wire outlets as well as checks GFCI operation. Faulty wiring can cause electrical shock or home fires SAFTEY FIRST- VS4000 NON-CONTACT VOLTAGE DETECTOR - make sure your power is off before starting your next electrical home project, place the detector near the outlet or wire. Beeper sounds and LED lights come on when voltage is detected. Extremely wide temperature range, measuring as low as 5VAC to 1000VAC. There is even an LED flashlight built in, after all the lights should be off QUICKLY CHECK VOLTAGE- SMT20- SMART MULTIMETER- Skip learning how to use a standard multimeter. With the push of only ONE button the multimeter automatically selects between AC/DC voltage and resistance, measures capacitance and frequency, taking the guesswork out for DIYers /Homeowners. Use to quickly check voltage of outlets, batteries, lightbulbs or power strips KIT INCLUDES- SMT20 Smart Multimeter, VS4000 Non-Contact Voltage Detector with Adjustable Sensitivity, GF1302 3-Wire Receptacle Tester with GFCI, batteries and users manuals