Introducing ‘trem-bel’ the clever multi alerting wristband/doorbell system for vulnerable people

trem-bel took best new invention 2018 at the British Invention Show  at the Barbican Centre on the 27th of October.

We’re all delighted!

‘Age UK’ estimates that there will be 14.5 million people with hearing loss by 2030.

The Royal National Institute for the Deaf (RNID) claim that around 2 million people in the U.K. have hearing aids,  however, only 1.4 million use them regularly

This number is expected to rise and by 2030 the number of people with hearing loss is expected to reach 14.5 million

The trem-bel wristband system is designed to be simple, smart and practical


We can upgrade technology – but we can’t upgrade people

trem-bel is more than just a doorbell alert:


  • Offers peace of mind for the carer
  • Is an aid to independent living
  • Fewer missed deliveries
  • Offers alerting capability from a number of sources
  • Practical wristband that is easy to attach
  • Contactless recharging
  • Water resistant for indoor and outdoor use
  • Clever technology that is ‘simple, practical and smart’
  • Vibrates and lights up
  • Alerts the caller to wait at the door


Water Resistant

Fewer Missed Deliveries

Outdoor Use – Never Miss an Alert


Did you know?


Of people have had problems contacting someone with hearing loss.

2 in 5

People have missed a delivery because they couldn’t hear the bell.


Of people think a device that can alert someone to answer the door would be useful.

What is trem-bel?

Our research has shown that many elderly or disabled users are not willing or able to embrace complex levels of technology, so smartphones, for example, are alien to them. Living alone is not easy if you are physically fragile, profoundly deaf, and/or with poor eyesight. However many people do prefer to stay in their own homes for as long as possible, aided by loved ones or carers.

We live in an era saturated with technology. Young people take it for granted. Most working-age people are acclimatised to its advantages. But many elderly people have simply not transitioned from an analog to a digital world and now shun technology altogether, because of fear of its operational complexity, or they simply do not see it as relevant to their lives, or both.

trem-bel assisted living technology

We take into consideration our users physical and cognitive abilities, to which the design of trem-bel is central.


Artists impression of doorbell button option

Above product is working proof of concept

Artists impression of wristband

trem-bels benefits and features

  • Vibrate and LEDs change colour for each alert
  • Runs for up to 2 days without charge
  • Recharge contactlessly
  • Long range for home and garden use
  • Alerts the caller to wait at the door
  • Operate garden equipment or wear a headset and still know you have a caller
  • Wash your hands while wearing it
  • Single button operation
  • Hands-free

trem-bel can offer alerts from these sources

We have designed trem-bel to respond to up to 7 different devices.


Smoke Alarm


Oven Timer



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