iSMA-B-LP-HC

iSMA-B-LP-HC is a room unit with 2.3” LCD display and four function buttons.  Additionally, the room unit has the built-in temperature sensor and the humidity and CO2 sensors.

iSMA-B-LP-HC is powered with 24 V AC/DC and has the built-in RS485 port (Modbus RTU/ASCII and BACnet MSTP).  Use of open communication protocol allows to connect the room unit with any controller supporting Modbus RTU/ASCII or BACnet MSTP. Together with iSMA-B-FCU controller, the room unit allows to change the basic parameters such as: temperature setpoint, fan speed, FCU mode and others.

Thanks to built-in USB port, there is possibility to firmware update and room unit configuration without the necessity of power supply. iSMA-B-LP has the modern design and is available in different colours (white is basic) on client request.

Specification

Temperature sensor

• Type: 10k NTC
• Range: 0 – 50°C
• Accuracy: +/- 0,5°C
• Resolution: +/- 0,1°C

Humidity sensor

• Range: 0-100% RH
• Accuracy: +/- 2% RH in range 20 – 80% RH
• Resolution: +/- 1% RH

CO2 sensor

• Method Non Dispersive Infrared (NDIR), gold plated optics, diffusion sampling (with Telaire’s Patented ABC Logic Self Calibrated Algorithm)
• Range: 400 – 2000 ppm
• Accuracy: +/- 30 ppm OR +/- 3% of reading
• Stability: < 2% of FS over life of sensor (15 years typical)
• Warm Up Time : < 2 minutes (operational); 10 minutes (maximum accuracy)
• Calibration: ABC Logic Algorithm
• Manual Calibration Interval: Not required

Communication

• 2x RJ 12 terminal (RS485 half duplex)
• Baud rate: 2400 to 115200 bps
• Protocol: Modbus, BACnet
• MINI USB, Type B

Platform

• ARM Cortex – M0+

Housing

• Dimension: 100x123x27 mm
• Construction: plastic, self-extinguishing (PC/ABS)
• Wall mounting (standard electric box)
• Cooling: internal air circulation

Environment

• Operating temperature: 0°C to 50°C
• Storage temperature: -40°C to 85°C
• Relative humidity: 5% to 95%, no condensation
• Ingress Protection Rating: IP20
• For indoor installation

Power supply

• 24 V AC/DC