First picture~Electrician Wiring Checker pen Tester Smart Detection Non-Contact AC Voltage Detector Tester Wall Socket LIVE Null Wire Alarm(Silver.

Electrician Wiring Checker Pen Tester Smart Detection Non-Contact AC Voltage Detector Tester Wall Socket LIVE Null Wire Alarm Dual Sensitivity: 12-1000V / 48-1000V Battery use: 1.5V AAA x 2pcs Alarm Mode: Sound and Light Alarm