The testo 770-3 Hook Clamp Meter is ideally suited for electrical work in HVAC applications. Testo’s unique hooking clamp design can be used to separate then grab wires. The easy hook-off retractable post releases the wires when testing in tight spaces. You can safely work without using your hands. The 770-3 additionally includes real-time power measurements (Watts), Power Factor, and Bluetooth. The Testo App can be used for remote viewing, monitoring, data logging, and creating reports. The powerful app allows you to create custom reports that include photos, data, and graphs that can be saved or sent via email.| DC voltage |
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| | Resolution | 6.000 V / 1 mV
60.00 V / 10 mV
600.0 V / 100 mV |
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| | Accuracy | ± (0.8 % of mv + 3 Digit) |
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| AC voltage |
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| | Resolution | 6.000 V / 1 mV
60.00 V / 10 mV
600.0 V / 100 mV |
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| | Accuracy | ± (0.8 % of mv + 3 Digit) |
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| General technical data |
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| | Dimensions | 10 x 4 x 2 in. / 243 x 96 x 43 mm |
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| | Operating temperature | 14.0° to 122.0 °F / -10 to +50 °C |
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| | Storage temperature | 5.0° to 140.0 °F / -15 to +60 °C |
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| | Overvoltage Category | CAT IV 600V; CAT III 1000V |
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| | Authorizations | TÜV; CSA; CE |
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| Instrument Measurement Functions |
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| | Temperature measurement with adapter | yes |
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| | Inrush current measurement | yes |
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| DC current |
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| | Accuracy | ± (2 % of mv + 5 Digit) |
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| Capcitance |
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| | Resolution | 6.000 nF / 0.001 nF
60.00 nF / 0.01 nF
600.0 nF / 0.1 nF
6.000 µF / 0.001 µF
60.00 µF / 0.01 µF
600.0 µF / 0.1 µF
6.000 mF / 1 µF
60.00 mF / 10 µF |
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| | Accuracy | ± (1.5 % of mv + 5 Digit) |
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| Frequency |
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| | Resolution | 99.99 Hz / 0.01 Hz
999.9 Hz / 0.1 Hz
9.999 kHz / 1 Hz |
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| | Accuracy | ± (1.0 % of mv + 1 Digit) |
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| Temperature - Type K TC |
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| | Measuring range | -4.0° to 932.0 °F / -20 to +500 °C |
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| | Accuracy | ±1.8 °F (32.0° to 212.0 °F) / ±1 °C (0 to +100 °C) |
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| | Resolution | 0.1 °F / 0.1 °C |
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| Delivery Scope | testo 770-3 hook-clamp digital multimeter 600 A with TRMS, Inrush, Temperature, and Power Measurement, and Bluetooth includes batteries and 1 set of measuring cables |
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Product Family
All orders are shipped same-day if the order is received by 1:00 PM Central Time. We ship worldwide.
UPS Hoilday Delivery Schedule
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For more informatrion about Warranty visit Warranty page.
You can also find answers to some common questions on our FAQ page
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