Test your RV’s 50-amp electrical pedestal connection with this 4-prong circuit tester. Works with 125 to 250-volt outlets and uses bulb-type indicators to reveal nine different wiring faults including reversed polarity, open ground, missing neutral, and more. Plug it in and read the light pattern to confirm a safe connection. No leads to manage, and CETL listing confirms it’s rated for marine and RV installations.

• Tests 125–250 volt 4-prong outlets
• Detects 9 wiring faults
• Bulb-type indicators
• No leads required
• CETL listed