Testo 770 True RMS Digital Clamp Meter
Testo 770 True RMS Digital Clamp Meter

Testo 770 True RMS Digital Clamp Meter

£0.00 ex. VAT
£0.00 inc. VAT
RRP: £89.00

Testo 770 - True RMS Digital Clamp Meter

The testo 770 Clamp Meter is ideally suited for current measurement in switching cabinets. A major advantage of the testo 770 is the fully retractable pincer. This unique mechanism means that cables in tight switching cabinets can be easily grabbed.

Another strong feature is the automatic measurement parameter detection. This ensures fast and reliable work: in the current and voltage area, all three versions of the clamp meter detect direct and alternating current and automatically select other parameters such as resistance, diode, capacitance, and continuity where applicable.

The testo 770-1 clamp meter is the standard version, perfect for the majority of daily measuring tasks, including starting current measurement.

The testo 770-2 also has a μA range as well as an integrated temperature adapter for all type K thermocouples.

In addition to the above features, the testo 770-3 model offers a performance measurement function and can be connected to the testo Smart Probes App by Bluetooth. In the App, you can display the measurement progression as a graph and document it directly into downloadable PDF reports. Another huge strength of the 770-3 version is it has the facility to measure Power/Wattage, and auto-calculates this.

Product advantages:


  • Unique grab mechanism makes it easier to work at tight measuring points
  • Auto AC/DC for current and voltage
  • Large two-line display
  • True root mean square measurement - TRMS
  • With additional functions, such as starting current, power and μA measurement
  • Bluetooth and testo Smart Probes App (on 760-3 model)

Product specifications testo 770-1 testo 770-2 testo 770-3
True RMS Yes Yes Yes
Basic accuracy 0.8 % 0.1 %
Voltage measuring range 1 mV to 600 V AC/DC
Current measuring range 0.1 to 400 A AC/DC 0.1 to 600 A AC/DC
Power measurement Yes
μA measuring range 0.1 to 400 μA AC/DC
Resistance measuring range 0.1 Ω to 40 MΩ 0.1 Ω to 60 MΩ
Frequency measuring range 0.001 Hz to 10 kHz
Capacitance measuring range 0.001 μF to 100 μF 0.001 μF to 60,000 μF
Temperature measuring range -20 to +500 °C
Bluetooth and testo Smart Probes App Yes
Continuity testing  Yes Yes Yes
Diode test  Yes Yes Yes
Display (counts) 4,000 6,000
Measurement category CAT IV 600 V
CAT III 1,000 V
Operating temperature    -10 to +50 °C
Storage temperature -15 to +60 °C
Dimensions 243 x 96 x 43 mm (L x W x H)
Weight 378 g
Warranty 2 years
Authorizations    TÜV, CSA, CE
Standards    EN 61326-1, EN 61140

Testo 770-1 Order-Nr.  0590 7701 (£89.00 plus VAT - £106.80 inc VAT)

Testo 770-2 Order-Nr.  0590 7702 (£119.00 plus VAT - £142.80 inc VAT)

Testo 770-3 Order-Nr.  0590 7703 (£149.00 plus VAT - £178.80 inc VAT)

Click here for the Testo 770 data sheet