The TC544A-1-CU from Altech is DIN rail mount temperature controller with 0°C to 400°C input range, On/Off; proportional (PID) control method, relay / solid state (2) output and screw terminal termination. This temperature controller has LED (red characters) display with 4 characters/row and 85 to 270VAC/DC supply voltage range. Panel cutout dimensions are: 48.00mm x 48.00mm. Operating temperature range is from 0°C to 50°C.