Fluke ST240+ RCD Socket Tester with Beeper – Audible & Visual CAT II 300V

The Fluke ST240+ RCD Socket Tester with Beeper is designed for quick and easy socket wiring checks in electrical, maintenance and service applications. With bright visual LED indication and an integrated audible beeper, it helps electricians and technicians quickly identify common socket wiring conditions and confirm RCD functionality.

Simple to use, the tester plugs directly into a socket outlet and displays wiring status using clear LED indicators. The handy front chart helps users identify one of six wiring conditions, including correct installation, earth fault, neutral fault, live fault, live/neutral reversed and live/earth reversed.

The Fluke ST240+ also includes an integrated RCD test function for checking RCD-protected outlets. With a CAT II 300V safety rating, switchable beeper and compact plug-in design, this socket tester is a practical everyday tool for electricians, HVAC technicians, maintenance teams and service professionals.

Key Features

• Plug-in socket tester with audible and visual indication

• Designed for quick socket wiring checks

• Integrated RCD test function for RCD-protected outlets

• Bright LED indicators provide fast visual status checking

• Integrated switchable beeper for audible confirmation

• Helps identify six common wiring conditions

• Detects correct installation, earth fault, neutral fault and live fault conditions

• Helps identify live/neutral reversed and live/earth reversed wiring

• Front reference chart supports quick fault identification

• Compact design for easy storage in a tool bag or service kit

• Useful for checking outlets during installation, service and maintenance work

• CAT II 300V safety rating

• Two-year warranty

Specifications

• Brand: Fluke

• Product Number: FLUST240PLUS

• Model: Fluke ST240+

• Product Name: RCD Socket Tester with Beeper

• Tool Type: Socket Tester / RCD Tester

• Rated Operating Voltage: 230V AC ±10% at 4mA

• Wattage: 0.92W typical

• Frequency: 50Hz

• RCD Test: Yes

• Integrated Beeper: Yes, switchable

• Indicator Lights: 1 red LED and 2 green LEDs

• Wiring Conditions: Correct installation, earth fault, neutral fault, live fault, live/neutral reversed and live/earth reversed

• Safety Rating: CAT II 300V

• Warranty: Two years

• Unit of Measure: Each

• Barcode: 195112033616

• Application: Socket wiring checks and RCD outlet testing for electrical, service and maintenance work

Ideal For

• Professional electricians

• HVAC technicians

• Electrical maintenance workers

• Service technicians

• Commercial and industrial electrical work

• Socket outlet testing

• RCD-protected outlet checks

• Fault finding and basic electrical troubleshooting

• Identifying common wiring faults

• Trade tool kits, service bags and maintenance vehicles

Professional Socket Tester for Fast Wiring and RCD Checks

The Fluke ST240+ RCD Socket Tester with Beeper is built for tradespeople who need a fast, simple and reliable way to check socket wiring and RCD-protected outlets. Its bright LED indicators, audible beeper and easy-to-read wiring chart make it a practical tool for quick electrical checks on site.

For electricians, HVAC technicians and maintenance teams, this Fluke socket tester provides compact convenience, clear fault identification and trusted Fluke reliability for everyday socket testing and service work.