Satel TD-1 Programmable Temperature Sensor Product code: TD-1. The TD-1 is a programmable temperature sensor that can handle two independent sensors: a built-in one and a connectable external one. It measures within a range of -35°C to +60°C and monitors when two thresholds of the measured parameter (minimum and maximum) are exceeded. It can also notify about excessively rapid temperature changes, which is useful, for example, for indicating rapid air warming in a cold store. Connecting a bistable switch instead of an external probe allows switching between two sets of critical parameters of the internal sensor, for example, day and night. The detector's housing contains three buttons for device programming and a four-digit LCD display that shows the current ambient temperature and the value read from the external probe. It can also display error messages. The TD-1 detector has a built-in piezoelectric transducer for audible signaling, a tamper contact and two programmable relay outputs that can be used for communication with the alarm control panel or to control another device. programming of thresholds and temperature gradient; ability to operate in two modes (saving function); ability to connect an external temperature probe; two relay outputs to control external devices; Technical data. Environmental class: II; Supply voltage (15%): 12 V DC ; Housing dimensions: 48 x 78 x 18 mm ; Operating temperature range: -10 ... +55°C; Measurement temperature range: -35 ... +60°C; Standby current consumption: 15-20% mA ; Maximum current consumption: 50 mA ; Weight: 108 g ; Permissible relay contact load (resistive): 1 A / 30 V DC; .