On/Off Sensor


The Urban.io On/Off Sensor can be used to detect electrical contact between two wired points, an external mechanical switch, relay, contact plate or low voltage control interface. This sensor samples every 30 seconds for electrical contact between the two end points. If there is no change it will report the state as a normal upon the default 10 minute interval. If a change is detected it will send a priority message through to the cloud platform to indicate the electrical interface has changed state.


This product is designed for usage with an Urban.io IoT Gateway. In ideal conditions with correct orientation of sensors and gateway antennas the following ranges can be achieved.

  • Up to 5km line-of-sight where there are no obstructions between the gateway and the sensor and they are placed on the same horizontal plane.
  • 500m non-line-of-sight in an enclosed space where there are one or more obstructions (objects, walls, buildings) between the gateway and the sensor and it is placed on the same horizontal plane.

This product is designed for application in normal indoor and certain outdoor environments. The gateway housing is IP65 rated and as such is designed to be water and dust resistant as well as generally resistant to direct sunlight. However the 240v Power Adapter is not rated for outdoor usage. ​

Urban.io proactively supports the interfacing of IoT sensor data with all industry leading Asset Management, Field Force and Work Management, Data Analytics and Machine Learning Platforms. We provide the following Public APIs as well as pre-built API Adapters for the following Enterprise IoT Systems :

  • API publics : MQTT, Rest Web Services
  • API adaptés : AWS IoT Core, IBM Watson IoT, Azure IoT Hu​b



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 On/Off Sensor features : 


General Sensor Features
Gateway to sensor network range  
500m indoor
5km outdoor
Operating Temperature 
-40°C to 85°C
Power Supply 
3.0 V CR2477 coin cell battery (replaceable) 
Battery life 
2 years under normal operation 
Reading frequency 
Constant monitoring
Data transmission frequency 
10 minute interval
Primary Sensing Element
The on/off state is determined using a voltage threshold on two wire electrical interface.

Secondary Sensing Elements
Fault detection
(loss of sensing element)
IoT network connectivity
(Signal to Noise levels “SNR”)
IoT device battery Level
(% of remaining battery level)
Technical specifications : 
Maximum resolution over measured electrical range
Sense wires normally open
Sense wires detect any voltage
Maximum input voltage

Calibration / Drift

Accuracy
Temperature range (limited by battery)
Enclosure rating

Digital threshold 0,1

Value = 0

Value = 1

-10V to +40V

None

100% accurate

-20°C to 85°C

IP67

Power specifications : 
Supply Voltage
Current consumption — sleep mode
Current consumption — sensor active sampling mode
Current consumption — radio RX mode
Current consumption — radio TX mode (max)

2,0 - 3,4 VDC

6 to 12 uA

6uA for 1 second

25 mA for 0,5 seconds

100 mA for 0,5 seconds

915-925 MHz

Suitable for South East Asia, Australia, North/South America. ​

863-870 MHz

Suitable for Africa, Middle East, Europe. ​

779-787 MHz

Suitable for China.

Mounting and dimensions :










Length : 73 mm (with antenna)

Height : 29 mm

Width : 44 mm

Weight : 85 g 

Example Applications


Lift and escalator monitoring
Relay switch monitoring
Fire panel monitoring

The company Urban IO


Urban IO provides a complete turnkey, industrial-grade system specifically designed for monitoring assets, systems, and spaces.

Our solution is the simplest and most cost-effective way to connect your assets to your management systems.

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