Sealey MM20HV 8 Function Digital Multimeter

The Sealey MM20HV is a heavy-duty digital multimeter designed for accurate electrical diagnostics and testing across eight essential functions. Built to withstand the demands of professional use, this general-purpose multimeter combines reliable performance with practical features that electricians, engineers and maintenance technicians require on site.

Housed in a rugged rubber boot with an integral stand, the MM20HV offers excellent protection against workshop knocks and drops whilst providing hands-free operation when needed. The clear, easy-to-read LCD display features 6-digit readout with 12mm height digits, ensuring measurements are visible even in challenging lighting conditions. A low battery indicator prevents unexpected power loss during critical testing work.

This multimeter measures AC and DC voltage up to 600V, DC current up to 10A, and resistance up to 2MO with accuracy ratings from ±0.5% to ±2% depending on the range selected. The integrated temperature probe extends its versatility significantly, measuring from -40°C to 1000°C, making it ideal for HVAC diagnostics, electrical panel monitoring and industrial equipment testing. Additional functions include audible continuity testing for quick circuit verification, plus diode and transistor test modes for component-level troubleshooting.

The data-hold function allows readings to be frozen on screen for recording in awkward locations or confined spaces. Supplied complete with a full set of leads and probes, the MM20HV arrives ready for immediate use and conforms to IEC 1010 safety standards.

Features and Benefits:
• Eight measurement functions covering voltage, current, resistance, temperature, continuity and component testing
• Rugged rubber protective boot with integral stand for hands-free operation
• Data-hold function for capturing readings in difficult-to-access locations
• Temperature probe included for thermal diagnostics from -40°C to 1000°C
• Audible continuity tester for rapid circuit verification
• Compact 140 x 70 x 35mm design weighing just 260g for easy portability
• Complete with leads and probes for immediate use

Specifications:
Brand: Sealey
Nett Weight: 260g
AC Voltage (Accuracy): 200V, 600V (±2%)
DC Voltage (Accuracy): 200mV (±0.5%), 2V (±0.8%), 20V (±0.8%), 200V (±0.8%), 600V (±0.8%)
AC Current (Accuracy): No
DC Current (Accuracy): 2mA (±1%), 20mA (±1%), 200mA (±1.2%), 10A (±2%)
Resistance (Accuracy): 200O, 2kO, 20kO, 200kO (±0.8%), 2MO (±1.2%)
Capacitance (Accuracy): No
Temperature (Accuracy): Range; -40°C-1000°C, (±1% up to 400°C), (±2% over 400°C)
Frequency (Accuracy): No
Duty Cycle: No
Continuity Audible: Yes
Diode Test: Yes
Transistor Test: Yes
High-Impact Rubber Case: Yes
Digits x Height: 6 x 12mm
Low Battery Indicator: Yes
Battery (Supplied): 1 x 9V
Integral Stand: Yes
Size (L x W x D): 140 x 70 x 35mm
Weight: 260g
Conformity: IEC 1010