RADON MONITOR (ISL EM1100)
The ISL EM1100 Radon Monitor is a professional radon sensor for fixed installation in smart homes, radon monitoring or mounting in air handling units and extract air fans.
The sensor in the ISL EM1100 Radon Monitor is designed to provide instantaneous values, with good response times to changes in radon concentration. The sensor measures the level of radon in the air in Bq/m³ and produces an analogue output signal of 1-10 V, proportional to the radon concentration. The signal from the sensor can be connected to an ISL105J Analogue LoRaWAN transmitter to form a full system.
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Designed to provide instantaneous values
- Good response time to changes in gas concentration
- 1-10V analogue output signal for connection to an ISL105J Analogue LoRaWAN transmitter
- Filtered diffusion to high voltage measurement chamber
- Alpha spectrometry
- 0-400 Bq/m³ or 0-4000 Bq/m³ options available

KEY FEATURES
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LONG BATTERY LIFE
Our sensors have been designed to have a battery life of up to 10 years, so you don't have to worry about changing them frequently.
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PROACTIVE ALARM SYSTEM
Pro-active alerts ensure that your team can prevent any critical level breaches.

PROVEN PARTNER
Invisible Systems are trusted by clients in both the public and private sectors. You can rely on us to deliver an outstanding level of service.
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PERSONALISED DASHBOARDS
Our online monitoring software, Realtime Online is set-up to meet the specific needs of your organisation.
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SIMPLE SET-UP
Our sensors are easy to set up and do not require integration with your existing IT infrastructure.

LOWER COSTS
Choosing wireless sensors and a cloud platform enables you to reduce your installation and maintenance costs.
ADDITIONAL INFORMATION
CONFIGURABLE THRESHOLDS
Configurable high/low thresholds allow different transmit intervals when thresholds are crossed providing advanced edge intelligence to the network, and enable alarms to be generated by Realtime-Online™.REAL-TIME MONITORING
LORAWAN
The ISLEM1100 is a LoRaWAN certified device and Invisible Systems are members of the LoRa alliance. It offers both ABP and OTAA activation options and is designed to work with all LoRaWAN gateways and network servers.
TECHNICAL DATA
ENVIRONMENTAL |
Dimensions: 60x76x45mm Weight: 240g Operating temperature range: 0°C to +60°C Storage temperature range: 0°C to +70°C Power supply: 10 – 30 V DC or AC Power consumption: < 50 mW |
SENSOR FEATURES |
Measurement principle: Filtered diffusion to high voltage measurement chamber Detection principle: Alpha spectrometry Output: 1 – 10V proportional to the radon content Measurement range: 0 – 400 Bq/m³ or 0 – 4000 Bq/m³ Maximum range: 0 – 100 000 Bq/m³ Uncertainty: Approx. 25% @ 200 Bq/m³ Time resolution: 1 hour |