... .1-99999,0.1-999999 for option)..Optional Function: up to 3 relay or SSR ouput, RS485 or RS232 interface ... Packing details: each packed in small box lined with plastic bag, then put into cartons Weight: about 350g. Models: Model and ... models of products, including Temperature Controller, Digital Adjustor,thermocouple (TC and RTD), Panel Meter, Sensor Meter, inductor, Power Meter, Coulometer ...