ZigBee sensor for temperature and humidity
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The ZED-THI-M is a battery powered device which perform temperature and humidity measurements at the same time and send them at regular intervals to a Gateway of the 4-noks products family.
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This device may be configured to manage alarm thresholds for exceeding maximum or minimum levels of measures. It is also possible to adjust the sampling and data transmission rate to improve battery life.
Key features
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- Temperature and humidity measurements for indoor use
- Alarm thresholds
- Sampling and transmission rates are configurable
- Battery powered
- Long life battery
- Internal antenna
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Technical Specs
| General characteristics |
Chip Ember EM250
Compatible IEEE 802.15.4
Stack EmberZnet3.4.x (ZigBee PRO)
Modbus/RTU
Device address settable via internal dip-switch |
| RF characteristics |
Frequency: 2405 MHz ÷ 2480 MHz
Modulation: DSSS
Nominal transmission power: 2mW (3 dBm)
Reception sensitivity: -95 dBm
Internal antenna gain: 0 dB
Coverage outdoor/indoor: 100m/30m |
| Supply |
AA high energy density lithium battery 3,6V/2000mAh
Battery life: 3 years in case of 1 transmission per minute at 20°C |
| Temperature/Humidity sensor |
Sensor used: Sensirion SMD SHT11 series
Temperature measurement range: from -40 to 120°C
Reading accuracy inside measurement range: +/- 1,5°C max. (view graph)
Temperature measurements in tenth degrees
Humidity measurement range: from 0 to 100% RH%
Reading accuracy +/- 5 RH% max. (view graph) |
Environmet parameters
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Operating temperature: -10 ÷ +60°C; <80% U.R. not condensing
Storage temperature: -20 ÷ +70°C; <80% U.R. not condensing
Degree of protection: IP 55 |
| Approvals |
ETSI EN 300 328: Radio Compatibility for digitals wide band transmissions
ETSI EN 301 489: Radio Compatibility
EN 61000-6-2: Electromagnetic Compatibility - Emissions
EN 61000-6-3: Electromagnetic Compatibility - Immunity
EN 60950-1: Electric Safety |
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