We had our smoke alarms installed by SATS. It took 15 minutes to install two and cost $25.00 per unit. SATS check them and install new batteries every twelve months. They do a fast, efficient job & the boys are always friendly and polite. It's a stress free way to take care of house safety because they take care of everything and give you a ring to make a mutually acceptable time to do the yearly checks when it's time.

Approximate cost: $50