EM01b - low cost, temperature, humidity and light remote monitor with 0-18v volt meter option



  • Low Cost
  • Works out of the box
  • Attaches to a standard 10/100 Mbps Ethernet port
  • Embedded web server requires - no proprietary software
  • Uses Ethernet port - communications via standard IT components
  • Sensors for temperature, RH and illumination - already built in
  • Optional ESBus for external sensors (flood monitoring etc)
  • Programmable email/text alerts - means 24/7 monitoring

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Parts Images Specifications Downloads

The EM01b-VLT is an entry level version of this very flexible temperature, humidity light remote monitor, but with the 0-18V sensor enabled and with sensing cable. Easy to use and set up the EM01b is exceptional value in remotely monitoring temperature and other parameters via a LAN connection. With its own web address, that is entirely configurable by the user as required, the EM01b works straight from the box.

The EM01b-VLT is a standard EM01b with an additional 'volt meter' measuring any external voltage between (0 to 18 VDC) via the supplied cable.

The EM01b family is the perfect solution for server rooms as it is straight forward to use. All you need to do is connect power and connect to your network using the PSU and cables provided. Once that's done you're able to access the monitor and view temperature, humidity and light information over your network. Some care is needed in the Internet addressing of the EM01 products for wide area networking use but our quick start guides and FAQs guide the user well. For more advanced administrators the EM01b can be easily intergrated with NAGIOS®: which is a popular open source computer system and network monitoring software application. It watches, hosts and services the connected monitors, alerting users when things go wrong and again when they get better Click here for an overview of NAGIOS®.

Low cost temperature, humidity and light websensor with additional external 0-18V sensing input


All alerts are operated by Nagios. The plugins are available within the downloads section of this page.


  • Detects contact closure (used to detect door opening) (Standard
  • External voltage measuring (0 to 18 VDC) see EM01bVM
  • External thermistor interface and additional temperature sensing see EM01bTherm


For stock availability please call +44 1189 769 014 before placing an order

EM01b Sensor Input


EM01b - low cost, temperature, humidity and light remote monitor with 0-18v volt meter option
1+ £185.85


Crossover Cable 1m

Crossover Cable 1m

For connecting a device directly to computer
Please call for pricing
01189 769014
Ethernet Cable 1m

Cat 5 Patch Cable 1m

For connecting device to a hub
1+ £4.57
EM01b Door Contact Connector

EM01b Door Contact Connector

Plug for you door contact system
1+ £3.37
Power Supply

Power Supply 12V (2.1mm pin)

100-240V AC - 2.1mm x 5.5mm x 12mm centre +ve Pin, 15W Multi Region Adapter
1+ £11.55



Downloads & Software


Quick Start Guide


User Manual

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