The poolguard pool alarm, once installed in the pool, cannot be de-activated; it is always in the alarm ready mode. Tamper proof: poolguard pool alarm will sound an alarm when removed from the pool. sleep mode: when you would like to use your pool, simply remove the alarm from the pool and put it into sleep mode. automatic wake-up: the poolguard pool alarm will automatically wake up and run a system test when installed into the pool. Features: The Poolguard POOL ALARM, once installed in the pool, cannot be de-activated; it is always in the alarm ready mode. Tamper Proof: Poolguard POOL ALARM will sound an alarm when removed from the pool. Sleep mode: when you would like to use your pool, simply remove the alarm from the pool and put it into sleep mode. Automatic Wake-up: The Poolguard Pool Alarm will automatically wake up and run a system test when installed into the pool. The Poolguard Pool Alarm comes with an in-house remote receiver that has a range up to 200 ft., and comes with a 12 volt power supply. The Poolguard poolside alarm works on a 9-volt battery (not included); with a battery life of approximately one year. Audible low battery indicator at the poolside alarm is also indicated by the in house remote receiver.