Hey Tony! The first sensor worked well for ~3 years but it was also on our entry door which gets a lot of use. I've never even had to replace a battery on our window sensors because they rarely get opened, so it depends on usage. Overall, I've had a really good experience with them and most of the time it only needs a new coin battery. On an entry door, those can last 9-12 months.
What else would you like to know? Check current price: amzn.to/3BQPW8k
What was prior battery drain duration. 3 months, 6 or 9. And was the new sensor better in drain time ?
Hey Tony! The first sensor worked well for ~3 years but it was also on our entry door which gets a lot of use. I've never even had to replace a battery on our window sensors because they rarely get opened, so it depends on usage. Overall, I've had a really good experience with them and most of the time it only needs a new coin battery. On an entry door, those can last 9-12 months.