Jefferson Voltage & Magnetic Field Tester Electrical Testing Pen

Details and Diagnostic Benefits of the Jefferson Voltage & Magnetic Field Tester

• Dual-Action Detection: Senses both live AC voltages and electromagnetic fields in a single compact unit, allowing you to check cables, switches, and solenoids with one hand tool.
• Non-Contact Testing Safety: Detects electrical potential through wire insulation without touching bare copper conductors, keeping you protected against accidental shock risks during initial site inspections.
• Magnetic Field Verification: Identifies active magnetic coils on hydraulic valves, relays, and pneumatic actuators instantly, confirming whether a component is energised without stripping down fittings.
• Clear LED and Audio Alerts: Features a high-visibility illumination tip combined with a clear buzzer tone, providing positive confirmation even in noisy machine rooms and dimly lit workshops.
• Integrated Pen Clip: Fastens firmly onto breast pockets, overalls, or tool belts, ensuring the unit is always to hand when you step up to an electrical enclosure or boiler cabinet.
• Hard-Wearing Insulated Body: Built from tough non-conductive plastic designed to withstand workshop knocks, grease exposure, and daily service van travel.
• Designed for indoor use