Honeywell Triple Aquastat Relay W/ High LimitTriple Aquastat Relay with High limit : 10 F fixed low limit: 10-25 F adj. Differential. Made in the USA. Product Specifications BRANDHoneywell MAX OPERATING PRESSURE (PSI)200 Immersion Well; 100 Direct Immersion TEMPERATURE RANGE LOW LIMIT110-220 TEMPERATURE RANGE HIGH LIMIT130-240 SWITCH TYPESPST: High & Low Limit APPLICATIONTriple Aquastat Relay with High limit DESCRIPTIONTriple Aquastat Relay LIMITED WARRANTY YEARS1 MANUFACTURER'S PART NUMBERL8124C1003