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Smallest and ONLY Surface Mount PIR Sensor





Press Release

PIR Sensors

Willow Technologies Limited introduces Murata’s IRS-B Sensor Series of dual and quad type surface mount, pyro-electric infrared sensors. Believed to be not only the smallest PIR sensors in the world, but also the only surface mount devices available, the series are aimed at a broad range of energy saving applications in consumer appliances.

The series comprises three models, IRS-B210ST01, IRS-B340ST02 and IRS-B345ST03. Measuring just 4.7 x 4.7 x 2.4 mm, these extremely small devices offer high sensitivity and signal to noise ratio, high stability against temperature changes and low power consumption.

Said Martin Pearce, Marketing Director, Willow Technologies Limited, “These cost effective sensors provide an efficient method of waking a consumer appliance, such as a television, photo frame or room lighting, from an energy saving standby mode to normal operation once human movement has been detected.”

The IRS-B345ST03 device also has the capability to detect minor motion such as waving hand or head.

In terms of ‘Environmentally Friendly Technology’ the IRS-B Series are most definitely the product of the future,” concluded Pearce.

Editor Information


Willow Technologies Limited, founded in 1989, provides solutions to customers by designing, manufacturing and supplying components and systems to the electrical and electronic marketplace across the globe. Specialists in switching, sensing, resistive and hermetic seal solutions, the company has a wide portfolio of technologies and over 100 years of application experience. With an in-house engineering capability and a production facility for rapid prototyping of custom parts, the company is well equipped to develop products matching customer specific application requirements. Willow is ISO9001: 2008 Registered.

For further information please contact:

Martin Pearce, This e-mail address is being protected from spambots. You need JavaScript enabled to view it , +44 (0) 1342 717102.

Willow Technologies Ltd. Unit 3 Borers Yard, Borers Arms Road, Copthorne, West Sussex, RH10 3LH, UK

Tel: +44 (0) 1342 717102, Fax: +44 (0) 1342 717014, Email:

CORPORATE: Solid State Group

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