Users of Ring video doorbells have reacted angrily to a huge price hike being introduced in March.
After buying the devices, customers can pay a subscription to store footage on the cloud, download clips and get discounted products.
That subscription is going up 43%, from £34.99 to £49.99 per device, per year, for basic plan customers.
The firm, which is owned by Amazon, insisted it still provided "some of the best value in the industry."