Testo 477 LED Handheld Stroboscope

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  • Measure rpm of high frequency cycles up to 300,000 rpm with ±0.02% accuracy
  • Micro flashes of high intensity light (50µs) via 1500 Lux LED lamp
  • ‘Slow down’ high frequency cycles to produce stationary image

rrp £665.00

now £545.00 (Ex. VAT) £654.00 (Inc. VAT)

rrp £665.00


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  • Description

    Testo 477 LED Handheld Stroboscope

    The Testo 477 LED Handheld Stroboscope performs non-contact rpm measurement of rotating components like propellors and flywheels via a high intensity (1500Lux) LED flash. The light is capable of up to 300,000 flashes per minute (fpm) with 0.02% accuracy and 0.1/1 fpm resolution. The flashing LED makes fast-moving mechanisms appear in slow motion meaning that any rotation and vibration can be measured and assessed during operation.

    The Testo 477 has a trigger input and output which means it can be connected to an external sensor or system. It has a large digital display that shows the fpm value and the user can adjust the flash duration and frequency via the simple push-button interface.

    A long 5-hour battery life is extremely practical and the Testo 477 also benefits from an IP65 ingress protection rating which makes it suitable for challenging environments. It is supplied with a battery, transport case, trigger signal connector and calibration protocol.

    Testo part number: 0563 4770

    Key Features

    • Measurement range: 300,000 fpm
    • Accuracy: ±0.02%
    • Resolution: 0.1/1fpm
    • 1500 Lux light intensity
    • LED lamp
    • IP65 rating
    • 5-hour battery life
  • Specification

    rpm - LED

    • Measuring range: 30 to 300000 fpm
    • Accuracy: 0.02 % of mv
    • Resolution: ±0.1 (30 to 999 fpm); ±1 (1000 to 300000 fpm)

    General technical data

    • Protection class: IP65
    • Flash duration: Can be adjusted
    • Flash intensity: 1500 Lux at 6000 FPM / 20 cm
    • Flash colour: Approx. 6500 K
    • Battery life: NiMH rechargeable battery: Approx. 11 h at 6000 fpm; Batteries: approx. 5 h at 6000 fpm (3 x AA)
    • Display type: LCD
    • Display size: Multiline
    • Reverse battery protection: Yes
    • Low level: < 1 V
    • Maximum current: 50 mA
  • Supplied Accessories

    • Testo 477 LED Handheld Stroboscope
    • Battery
    • Transport case
    • Trigger signal connector
    • Calibration protocol
    • Instructions for Testo 477
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  • Delivery Information

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    We use DPD/Interlink for all larger items and Royal Mail for smaller items and accessories. With DPD/Interlink you will receive a 1 hour delivery window on the day of delivery via e-mail/text and a notification 15 minutes before arrival so you will not have to wait around all day. You can even manage your booking online and re-arrange delivery for another date or arrange the goods to be left with a neighbour of your choice.

    We also offer delivery options for goods required urgently on certain products, all which are sent by DPD/Interlink.

    Our charges for UK deliveries:

    • FREE Delivery (on select products only): typically 3-5 working days*
    • Standard Delivery at £4.95: 2-3 working days
    • Next Working Day Delivery (on select products only) at £7.50
    • Pre-Noon Next Working Day Delivery (on select products only) at £9.50*
    • Pre-10.30am Next Working Day Delivery (on select products only) at £18.50*
    • Saturday Pre-Noon Delivery (on select products only) at £14.50*
    • Sunday Pre-Noon Delivery (on select products only) at £14.50*

    *UK mainland only

    NOTE! For next working day or Saturday/Sunday delivery options the order MUST be placed no later than 3pm on the working day before delivery is required. After 3pm, please arrange with our staff before selecting a priority delivery service. Priority services are available to UK mainland residents only (this might exclude certain areas in the north of Scotland).

    Customers outside the UK: exports to many countries all over the world. Prices for shipping vary on location and weight/dimensions. Costs are calculated for certain countries at the checkout. If your country is not included in this list please e-mail with your name, address and the items you would like to order for an accurate shipping quote or go to for more information.

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