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Product Description

Product Description

This device measures the delay which takes a video signal to pass from the input until it is displayed on a television, monitor or projector screen. Commonly known as input lag, this delay can be a cause of various problems for users in different fields, from average home gamer to public displays and even specialised areas such the medical profession and broadcasting. Click here for info on display lag.

- Provides accurate measurement with 1 millisecond accuracy.

- Measures combined input signal processing and pixel response lag.

- Works with 4K LCD, LED, OLED TVs, monitors and projectors.

- Powered from any USB socket on a TV, PC or power-bank (cable supplied.)

- Standalone hardware device.

- Very simple to use.

- Portable design - fits in your pocket!

Connection to Screen or Projector

The device has a standard HDMI connector. You can use any standard 4K HDMI cable.


Output Connector


Output Resolutions


Output Frequency

60 and 50Hz via FW Upload

Power Requirements

1 x USB Power

Housing Material



100g (excluding cable)

Dimensions (LxWxH)

85x58x26 mm


More Details

LCD/LED Screens
Results will vary between the three reference marks on an LCD/LED screen. This is due to the way the screen is updated, generally starting from the top and ending at the bottom. The minimum result possible at the bottom of the screen should be 16ms (t = 1 / f = 1 / (60 Hz) = 16.67 ms). We recommend using the middle reference mark for recording results.

When using a projector simply turn the device around so that the photo sensor on the back of the device is positioned inside one of the displayed reference marks. We recommend using the middle reference mark for recording results.

Fluctuating Results
This can be caused by a timing difference in the back light and screen refresh rate. In this instance we recommend using the lowest value. For best results we also recommend setting the screen to the highest brightness and reduce ambient lighting where possible to ensure the most accurate readings.

Proudly designed and made in the UK.

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