| Manufacturer | APAR |
| Controlled parameter | temperature |
| Kind of input 1 | digital, RTD, thermocouple, universal |
| Input properties | RTD; thermocouple |
| Kind of temperature sensor | Pt100, thermocouple B, thermocouple E, thermocouple J, thermocouple K, thermocouple N, thermocouple R, thermocouple S, thermocouple T |
| The programming method | foil keypad |
| Usup | 20...350V DC |
| Usup | 15...250V AC |
| Display | LED |
| Display parameters | 4 digit |
| Display height 1 | 10mm |
| Mounting | for DIN rail mounting |
| Body dimensions | 53x90x62mm |
| Operating temperature | 0...50°C |
| IP rating | IP20 at terminal side, IP40 (from the front) |
| Regulation for output 1 | AUTOTUNING, ON-OFF, ON-OFF with hysteresis, PID |
| Controlled parameter range | -1999...9999 |
| Manufacturer series | AR661 |
| Type of automation module | regulator |