Environmental monitoring hardware

Environmental monitoring is a must-be when trying to get the highest SLAs for our IT infrastructure, mostly when talking about datacenters, where an environmental problem like liquid presence or high temperature can affect not just to one but to the most of the hosted devices.

Monitoring environmental parameters is all but expensive: most of the monitoring devices have low prices, they are easy to deploy and their cycle of life is longer than, for instance, the cycle of life of a network switch. Far for being closely bound to propietary solutions, most of the monitoring devices support open network protocols (like SNMP or telnet) that allow them to work together with your preferred monitoring system (Nagios and its forks Centreon and Icinga, Zenoss, MRTG...).

This article introduces a set of devices addressed to control key environmental parameters as temperature, humidity, liquid presence, air flow or smoke. For each it defines what environmental parameter(s) can be monitored and how this data can be accesses from a point of view of harware (interfaces) and software (supported network protocols, alert forwarding, SDKs,...).

Devices

Devices have been classified attending to three aspects:

• The variable(s) being measured: temperature, humidity, light, liquid presence, air flow and smoke
• The phisical interface: ethernet, POE ethernet, wireless and human (integrated display)
• The logical capabilities: support to HTTP and SNMP, email alerts, internal storage...

Shown products are manufactured and/or sold by Comet, Sequoia, Sensormetrix and HW Group, all them selling online and/or with partners in every continent, so the defined products should be available worldwide.

Variables being measured

	Temperature	Humidity	Light	Liquid presence	Air flow	Smoke
Comet P8510	•
Comet T0510	•
Comet P8610-PoE	•
Sensormetrix EM01b-STN	•	•	•
Comet T3510	•
Sensormetrix EM01B-FLD	•	•	•	Point
Sequoia SWS-TH1 (requieres a SWS-R1 gateway)	•	•
HW Group STE-PoE	•	•
HW Group HWG-WLD				Perimeter
HW Group HWG-WLD PoE				Perimeter
HW Group SL5101 (for Poseidon family)					•
HW Group FDR26 (for Poseidon family)						•

Physical interface

	Ethernet	Ethernet PoE	Wireless	Integrated display
Comet P8510	•
Comet T0510	•			•
Comet P8610-PoE	•	•
Sensormetrix EM01b-STN	•
Comet T3510	•			•
Sensormetrix EM01B-FLD	•
Sequoia SWS-TH1 (requieres a SWS-R1 gateway)			•
HW Group STE-PoE	•	•
HW Group HWG-WLD	•
HW Group HWG-WLD PoE	•	•
HW Group SL5101 (for Poseidon family)	•
HW Group FDR26 (for Poseidon family)	•

Logical capabilities

	Interfaces	email alerts	internal storage	Other
Comet P8510	HTTP SNMP	Yes	1.000 records	XML interface ModbusTCP
Comet T0510	HTTP SNMP	Yes	1.000 records	XML interface ModbusTCP
Comet P8610-PoE	HTTP SNMP	Yes	1.000 records	XML interface ModbusTCP
Sensormetrix EM01b-STN	HTTP SNMP	Yes	-	Officially supported by Nagios
Comet T3510	HTTP SNMP	Yes	1000 records	XML interface ModbusTCP
Sensormetrix EM01B-FLD	HTTP SNMP	Yes	-	Plugins for Nagios, Zenoss, MRTG...
Sequoia SWS-TH1 (requires a SWS-R1 gateway)	Via management software	Via management software	-	-
HW Group STE-PoE	HTTP SNMP Relay output	Yes	-	SDK available
HW Group HWG-WLD	HTTP SNMP Relay output	Yes	-	SDK available
HW Group HWG-WLD PoE	HTTP SNMP Relay output	Yes	-	SDK available
HW Group SL5101 (for Poseidon family)	HTTP SNMP Relay output*	Yes	40.000 records**	ModbusTCP SDK available
HW Group FDR26 (for Poseidon family)	HTTP SNMP Relay output*	Yes	40.000 records**	ModbusTCP SDK available

(*) Relay outputs available in all Poseidon family except for model 3366
(**) Internal storage only available in model Poseidon 2250

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