Smartpool PE23 PoolEye AG/IG Immersion Alarm The ASTM-compliant Smartpool PE23 PoolEye AG/IG Immersion Alarm ($111, originally $219) has a remote receiver and works in in-ground or above-ground pools up to 18 by 36-feet. Plus, its one remote can be used for multiple alarms. Smartpool PE23 PoolEye AG/IG Immersion Alarm $111 from amazon.com Buy Now