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Accoson Greenlight 300 with Adult Velcro Cuff

The Greenlight 300 has been developed to provide a reliable and accurate alternative without mercury. This is achieved using silicon chip technology replacing the traditional mercury column with an electronic pressure detection system.
Validated to the ESH International Protocol by the Mayo Clinic. It is also sold as a test reference manometer for calibrating and checking aneroid devices – chosen by leading pharmaceutical companies for their testing services in the UK.
The traditional mercury display is replaced with LEDs clearly displaying pressure in steps of 2 mmHg, and the clinically important cuff pressure deflation rate is indicated.
Available in Green or White. Comes with an adult-sized cuff. Compliant with the European standards BS EN ISO 81060-1 and BS EN 1060-3.


Automatic Switch Off - The Greenlight 300 will automatically switch off after one minute of not being used, provided the cuff pressure remains below 20mmHg. If a residual cuff pressure of over 20mmHg is maintained (in the case of continual readings) the device will stay switched on.

When Accuracy is Compromised - The Greenlight 300 will switch itself off if it is subjected to abnormal conditions, such as a significant change in temperature. The device will stabilize and may then be switched on again when the normal self-calibration will take place.

Residual Cuff Pressure - If the Greenlight 300 is switched off when there is pressure in the cuff, and then switched on again, it will automatically recalibrate itself to zero and then indicate the residual cuff pressure.

Battery Replacement - The Greenlight 300 takes four AA/LR6 alkaline batteries. These will last for over a year in typical hospital ward use. The use of rechargeable batteries is not recommended.

Orientation - The Greenlight 300 does not need to be vertical or in any particular orientation when in use. There are no moving parts to affect the accuracy.

Battery Power - When the low battery warning indicator comes on continuously, the Greenlight 300 cannot be used and the batteries need to be replaced immediately.

Calibration The Greenlight 300 will automatically self-calibrate to zero each time it is switched on. This calibration will only need to be checked after four years. Other components should be examined regularly for signs of wear, this will ensure continuing measurement accuracy.

Cleaning & Infection Control - Wipe the device with a damp cloth, soaked in hospital detergent. Do not let water into the battery compartment or the device itself. If water enters the battery compartment, remove the batteries immediately and leave the device to dry thoroughly before reinserting them.

  • Free delivery on orders over £75 (UK mainland only)
  • £4.99 for orders under £75 (UK mainland only)
  • £6.99 for Next Working day delivery
  • £10.99 for Next working day before 10:30am
  • All prices are Excl VAT
  • Orders Placed on Monday to Thursday before 3pm will be dispatched the same day (if all items are in stock)
  • Orders placed on Fridays before 12pm will be dispatched the same day (if all items are in stock)
  • All the above excludes Bank Holidays & Direct Delivery items


  • Items delivered direct from the Manufacturer may take longer. 
  • If you wish to order a direct delivery item but need the item by a certain date, please call us on 01992 893 398 and we will endeavour to get a delivery time for you.
  • We can deliver Worldwide
  • International deliveries can take longer than the standard 2-5 working days
  • P&P charges may change. We will contact you before applying these changes and confirming your order
  • It is the customer’s responsibility to confirm specific custom requirements for their country. MidMeds will accept no responsibility for customs refusal and all charges will be passed on to the client
  • 30 Day money back guarantee, as long as the products are in their original condition (This excludes Furniture, Special Orders and Pharmaceuticals)
  • You will receive a full refund minus postage and a 3% credit transaction charge if you paid by credit card
  • For more information visit our help desk for FAQ