ENDA ETC 8420 is programmable digital thermostat by Sisel Mühendislik Elektronik based on a microprocessor with a selectable relay or SSR control output for On/Off, P, PI, PD, PID action and soft start or self-tuning function. For the alarm output, selectable NO or NC relay offers 4 different output types. The unit is provided with configurable input for Pt100 and thermocouples (J, K, T, S, R). Optional RS485 module is available for communication via Modbus RTU protocol. Both the set and process values are viewed on a 2x4 digit display. ETC8420 allows 3 levels parameter protection to prevent authorized access to settings. To provide environmentally safe products to the world, the company applied RoHs standards and currently all ENDA brand products carry RoHs mark on the label of products.