SENSITRON S4629R454B R454B gas detector (0 - 100% LFL), IRNET infrared sensor, -40 / +60°C, 12-24 Vdc

SMART3-R is developed to detect different gases in non classified areas, as machinery rooms and laboratories. An infrared sensor is used to detect flammable and 

refrigerant gases, thanks to the high reliability and selectivity. 4 smart LEDs illuminate the transparent ring to describe the detector status and an internal buzzer is 

activated in alarm and fault conditions. The SMART3-R gas detector has a standard 

12-24 Vdc power supply, but a 220 Vac version can be supplied. The gas detector 

has three relay outputs, an RS485 serial communication and an analogue 4-20 mA 

output (not in 220 Vac version). 

The polycarbonate case has a global size of 130 x 130 x 74 mm. The box has 2 entries with M20 cable glands. On the sides there are pre-formed guides that can be 

drilled to add up to 6 M16 cable glands.

The gas detector can be equipped with a remote head connected with 6 conductors cable