The Attendant Pool Automation | ATT-2 Poolside TechWater Quality & Temperature Management for Chemistry Module Universal pH and ORP Probe Connectivity Integrates with standard pH and ORP probes for continuous water chemistry monitoring. Temperature Device Integration Supports up to five temperature controlled devices or low voltage dry contact devices, including gas heaters, electric heat pumps, solar heating systems, and chillers. Sensor Inputs Includes five temperature sensor inputs or compatibility