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Sensor for temperature, humidity and light


DB2-RH-T-LX
Key features

  • Temperature, humidity and light measurements for indoor/outdoor use
  • Alarm thresholds
  • Sampling and transmission rates are confi gurable
  • Battery powered
  • Long life battery
  • Internal antenna

DB2-RH-T-LX is a battery powered device which perform temperature, humidity and light measurements at the same time and send them at regular intervals to a Gateway of the Digitron products family.
This device may be confi gured 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.
The sensors are protected into a plastic material case such as Gore-Tex in order to let only air entering and no water.


Technical Specs
General characteristics
Chip Ember EM250
Compatible IEEE 802.15.4
Stack EmberZnet3.5.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.
Temperature measurements in tenth degrees
Humidity measurement range: from 0 to 100% RH%
Reading accuracy +/- 5 RH% max.
Light/Sensor
Sensor used: Agilent ADPS-9002
Error : +/-5% in the range between 10 and 1000 Lux
Environment parameters
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
Compliant with 2006/95/EEC, 89/336/ EEC, 99/5/EEC directives Reference Norms
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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