Calibratable tube contact temperature measuring transducer with strap THERMASGARD ® ALTM1 - Modbus with Modbus connection, terminal box enclosure made of impact-resistant plastic, enclosure cover with quick-locking screws, with ⁄ without optional display (for indicating the actual temperature). The surface-contact sensor is used for temperature detection on lines, pipes (e.g. cold and hot water) or on heating sections for heating system control. The tube sensors are factory-calibrated. Adjustment ⁄ fine adjustment by the user is possible (zero point offset is adjustable).