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Components

The following components/devices enable Checkit‘s Automated Monitoring service. 

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Hub
A Hub receives data via Zigbee wireless communications from all types of Checkit Sensors, Sensor+ and Repeaters and transmits the data to the Checkit Control Centre over the Internet. Models without antenna are still valid and still shipping, so you may receive a Hub without one. Note that in the USA (only) all Hubs installed must have an antenna. 

Connects to the mains/grid electrical supply but has a rechargeable non-replaceable battery for backup purposes in case of mains power supply failure. The power supply adapter is mains/grid to 5V with Input 100-240, VAC 50/60 Hz 0.4A and Output 5.0V DC 2.0A. A Hub can also use Power over Ethernet.

Full specification in Network Data Sheet 

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Repeater
A Repeater is used to extend the range over which a Sensor and Sensor+ can communicate with a Hub by relaying communications between the two. It receives data via Zigbee wireless communications from all types of Checkit Sensor and (other) Checkit Repeaters and transmits the data to the  Checkit Hub to which it has been assigned.

Repeaters without antenna are still valid and still shipping, so you may receive a Repeater without one. Note that in the USA (only) all Repeaters installed must have an antenna.

Connects to the mains/grid electrical supply but has a rechargeable non-replaceable battery for backup purposes in case of mains/grid power supply failure. The power supply adapter is mains to 5V with Input 100-240, VAC 50/60 Hz 0.4A and Output 5.0V DC 2.0A.

Full specification in Network Data Sheet 

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Sensor Temperature
A sealed sensor it measures air temperatures between -30°C (-22°F) and 60°C (140°F). Looks a little different when the mounting clip is around it, as shown right. Mounting clip has adhesive pad – just peel-off the cover.
Has an internal non-replaceable, non-rechargeable battery. These units are replaced by Checkit before the battery runs out of power.
Full specification in Sensor Data Sheet

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Sensor temperature 100
Measures air between -30°C (-22°F) and 100°C (212°F). Exposure to temperatures above 150˚C (302˚F) may result in fire, explosion and a severe burn hazard. Typically used for buffet/hot-hold shelves. Mounting clip has adhesive pad – just peel-off the cover. Has an internal non-replaceable, non-rechargeable battery. These units are replaced by Checkit before the battery runs out of power. Full specification not yet available.

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Power Unit Battery (PUB)
Each Sensor in the Sensor+ range (as described below) requires a PUB for electrical power and wireless communication with a Checkit Hub and is connected to a PUB using an RJ12 cable.

A PUB can be used in an operating environment temperature of 0°C (32°F) to 40°C (104°F) and humidity of 0 to 90% RH.
Has an internal replaceable battery accessible via the housing in the back of the unit. Battery type: ER14505 3.6V Lithium Thionyl Chloride 2.6Ah
Full specification in Network Data Sheet 

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Sensor+ air temperature and Sensor+ humidity and air temperature
Both measure air temperature between -20°C (-4°F) and 60°C (140°F) and one also measures humidity 0 to 100% RH.

Powered through an RJ12 cable connected to a PUB.
Full specification in Sensor+ Data Sheet  

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Sensor+ door
Used to report door opening and closing (freezer doors and fire doors for example).
Powered through an RJ12 cable connected to a PUB.
Full specification in Sensor+ Data Sheet 

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Sensor+ ultra-cold temperature (has a blue sleeve) measures air and liquid between 80°C (-112°F) and -20°C (-4°F).

Sensor+ ultra-hot temperature (has a red sleeve) measures air and liquid between100°C (212°F) and 260°C (500°F).

Sensor+ hot temperature (has a yellow sleeve) measures air and liquid between 0°C (32°F) and 100°C (212°F).

Are all powered through an RJ12 cable connected to a PUB.
Full specification in Sensor+ Data Sheet 

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Tag
Used to control Sensors and Repeaters, to request a signal strength indication, for example.
Tags do not require a power supply (they use magnetism). 

 

 

 

 

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