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ModBUS environmental sensor with a movement sensor and IR transmitter for managing air conditioners and heat pumps

KET-OFX-110 is a complete environmental sensor able to detect the movement of people in a radius of about 3-4 meters, is equipped with sensors for temperature, relative humidity, light, indirect CO2 and VOC (Volatile Organic Compounds).

The built-in dual light sensor allows you to limit the switching on of lights only below a certain threshold of illumination that can be set remotely.

The sensor in MOX technology works according to the indirect method of CO2 measurement, i.e. it measures the amount of hydrogen and from that estimates the amount of CO2. Combined with the sensor that measures the percentage of Volatile Organic Compounds (VOC), it allows you to take the necessary measures to increase and improve the efficiency of ventilation and air purification.

Moreover, thanks to the infrared transmitter, it can control a wide range of air conditioners and heat pump systems. It is also equipped with an IR receiver for acquiring custom commands.

The ModBUS interface allows the KET-OFX-110 to be connected to SCADA, programmable logic and standard monitoring systems, while the digital dry contact input can be used to connect door/window contacts, PIR sensors or control buttons. These features, together with the convenient e-ink display and the thermostat function for setting the temperature set point and other useful parameters to regulate the operation of the controlled device, make the KET-OFX-100 the ideal device for supervisory and energy management systems (BMS / BEMS).

Suitable for use in public environments, it supports keypad lock and limitation of active functions. 

GENERAL SPECIFICATIONS
Protection Range IP40
Operative Temperature -10 ÷ +60 °C
Storage Temperature -20 ÷ +70 °C
Relative Humidity MAX 80% not condensing
CASE
Dimensions 100 x 100 x 22.5 mm (W x H x D)
Mounting Wall mounting with supplied supports
Material ABS, self extinguishing: UL 94 V-O
POWER SUPPLY
Supply Voltage 5 ÷ 12 VDC
Connectors types Removable spring clamps
RS485 INTERFACE
Supported Protocols ModBUS RTU Slave
Communication Rate 9.6, 19.2, 38.4 or 57.6 Kpbs
Connectors types Removable spring clamps
IR INTERFACE
Max distance 3 m
Learning mode Supported on .RX version
Supported devices Available on web site (use QR Code for quick access)
DIGITAL INPUTS
Channels 1 for dry contact
FUNCTIONALITY
Firmware Upgrade Via USB C connector
User menu Thermostat function with temperature summer / winter mode, comfort / saving / off mode, air speed setting, (only .TS version)
Support for public environment Anti-removal support, keyboard lock and active function limitation
TEMPERATURE SENSOR
Sensor Type Digital
Measure Range -40 ÷ +123.8 °C
Precision ±0.4 ÷ 25 °C
Repeatability ±0.1 °C
Resolution ±0.01 °C
HUMIDITY SENSOR
Measure Range 0 ÷ 100%RH
Precision ±3%RH from 20 to 80%RH
Repeatability ±0.1%RH
Resolution ±0.03%RH
Hysteresis ±1%RH
Long Period Stability <0.5%RH/year
LIGHT SENSOR
Number of sensors 2, on front and on top
Measure Range 10 ÷ 1000 Lux
Response Curve Similar to that of the human eye
VOLATILE ORGANICS COMPOUNDS SENSOR
Measure Range 0 ÷ 60000 ppb
Accuracy ±15% ppb
Resolution ±0.2% ppb
CO2 SENSOR
Principle of Operation Indirect
Measure Range 400 ÷ 60000 ppm
Accuracy ±10% ppm
Resolution ±0.2% ppm
MOTION SENSOR
Measurand Up to 4 m; Recommended 0 ÷ 3.5 m
Viewing Angle <=100° cone angle, distance <=4m
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