The Smart 3H Lite has been designed to monitor the refrigerant gases and carbon dioxide in hotels and residential areas.

The design aims to have a cost-effective product, thanks to the presence of a special infrared sensor.

Three intelligent LEDs that uniformly illuminate the semi-transparent crown constantly display the detector status.

The Smart 3H Lite gas detector is developed in two versions, one powered at 12-24 Vdc and one at 90-240 Vac; in both versions, there is an RS485 serial output and two relays.

The housing is made of polycarbonate and has an IP42 degree of protection.

Order Information

SMART 3-H LITE – Refrigerant Gases (Infrared Sensor)

Range: 0–20% LFL

Part Number	Description	Alarm Thresholds
S3843R32	R32 DIFLUOROMETHANE detector	5% & 10% LFL
S3844R1234YF	R1234yf detector	5% & 10% LFL
S3845R1234ZE	R1234ze detector	5% & 10% LFL
S3848R454A	R454A detector	5% & 10% LFL
S3849R454B	R454B detector	5% & 10% LFL
S3850R454C	R454C detector	5% & 10% LFL
S3851R452B	R452B detector	5% & 10% LFL

Range: 0–5000 ppm

Part Number	Description	Alarm Thresholds
S3846R134A	R134a detector	1000 & 2000 ppm
S3847R410A	R410A detector	1000 & 2000 ppm
S3854R32	R32 detector	1000 & 2000 ppm
S3855R404A	R404A detector	1000 & 2000 ppm
S3856R407C	R407C detector	1000 & 2000 ppm
S3857R1234YF	R1234YF detector	1000 & 2000 ppm
S3858R1234ZE	R1234ZE detector	1000 & 2000 ppm
S3859CO2	CO2 detector	1000 & 2000 ppm

Calibration Tools

Part Number	Description
STS/CKD+	Enhanced calibration keypad with 7-digit display. It can be connected to SENSITRON’S SMART detectors to adjust the Zero, Span and 4–20 mA values.