H7531-MIB

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Description: H7531-MIB module

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What Is H7531-MIB?

The H7531-MIB corresponds to a Comet H7531 environmental monitoring sensor, a compact device that measures temperature and humidity (and often ancillary conditions) and can drive alarm relays. It exposes basic environmental measurement objects—temperature, humidity, pressure, and a general computed value—alongside configurable alarm thresholds (tempLow/tempHigh, humidityLow) and digital input/relay status objects. Its core use is monitoring the physical environmental status of a facility or equipment room, such as detecting over-temperature or humidity excursions that could threaten rack-mounted hardware, and reporting relay/input contact state for door sensors or external alarms. It is a standalone enterprise MIB with no notable dependency on other MIBs. It is typically deployed in server rooms, telecom closets, or industrial cabinets where a Comet H7531 sensor unit reports environmental conditions to a monitoring system. Engineers can download the H7531-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in H7531-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

Comet H7531 environmental sensor

Monitoring Examples

An administrator would poll the temperature and humidity objects regularly and compare them against tempHigh/tempLow and humidityLow thresholds to detect an environmental excursion, such as a failed air-conditioning unit causing a temperature spike in a server room. The relay1/relay2 and input1/input2/input3 objects reveal whether the device has triggered an alarm relay or detected a contact closure (e.g., an open door), and computedValue can represent a derived metric such as dew point.

What Can Be Monitored

ambient temperature
relative humidity
atmospheric pressure
alarm relay state
digital input/contact status
high/low threshold alarms

Imported Objects

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

enterprises

How to Use in IPNetwork Monitor

Example using relay1 OID:

Select a Comet H7531 environmental monitoring sensor as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type relay1 into the Find box to locate it in the OID tree, then select it and click OK. It reports the relay 1 status. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is an INTEGER-type OID, Value bounds is the most useful condition here — trigger an alert if the value drifts significantly from its normal baseline, since an unexpected change often points to a real underlying issue. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
comet	1.3.6.1.4.1.22626
products	1.3.6.1.4.1.22626.1
h7531	1.3.6.1.4.1.22626.1.2
readings	1.3.6.1.4.1.22626.1.2.1
STR temperature	1.3.6.1.4.1.22626.1.2.1.1	DisplayString	read-only	Temperature
STR humidity	1.3.6.1.4.1.22626.1.2.1.2	DisplayString	read-only	Humidity
STR computedValue	1.3.6.1.4.1.22626.1.2.1.3	DisplayString	read-only	Computed value
STR pressure	1.3.6.1.4.1.22626.1.2.1.4	DisplayString	read-only	Pressure
INT relay1Ex	1.3.6.1.4.1.22626.1.2.1.5	INTEGER	read-only	Relay 1 status
INT relay2	1.3.6.1.4.1.22626.1.2.1.6	INTEGER	read-only	Relay 2 status
INT input1	1.3.6.1.4.1.22626.1.2.1.7	INTEGER	read-only	Binary Input 1
INT input2	1.3.6.1.4.1.22626.1.2.1.8	INTEGER	read-only	Binary Input 2
INT input3	1.3.6.1.4.1.22626.1.2.1.9	INTEGER	read-only	Binary Input 3
settings	1.3.6.1.4.1.22626.1.2.2
STR tempLow	1.3.6.1.4.1.22626.1.2.2.1	DisplayString	read-only	Temperature Limit Low
STR tempHigh	1.3.6.1.4.1.22626.1.2.2.2	DisplayString	read-only	Temperature Limit High
STR humidityLow	1.3.6.1.4.1.22626.1.2.2.3	DisplayString	read-only	Humidity Limit Low
STR humidityHigh	1.3.6.1.4.1.22626.1.2.2.4	DisplayString	read-only	Humidity Limit High
STR cvLow	1.3.6.1.4.1.22626.1.2.2.5	DisplayString	read-only	Computed Value Limit Low
STR cvHigh	1.3.6.1.4.1.22626.1.2.2.6	DisplayString	read-only	Computed Value Limit High
INT tempTime	1.3.6.1.4.1.22626.1.2.2.7	INTEGER	read-only	Temperature alaram delay
INT humidityTime	1.3.6.1.4.1.22626.1.2.2.8	INTEGER	read-only	Humidity alaram delay
INT cvTime	1.3.6.1.4.1.22626.1.2.2.9	INTEGER	read-only	Computed value alaram delay
STR tempHyst	1.3.6.1.4.1.22626.1.2.2.10	DisplayString	read-only	Temperature hysteresis
STR humidityHyst	1.3.6.1.4.1.22626.1.2.2.11	DisplayString	read-only	Humidity hysteresis
STR cvHyst	1.3.6.1.4.1.22626.1.2.2.12	DisplayString	read-only	Computed value hysteresis
STR pressLow	1.3.6.1.4.1.22626.1.2.2.13	DisplayString	read-only	Pressure Limit Low
STR pressHigh	1.3.6.1.4.1.22626.1.2.2.14	DisplayString	read-only	Pressure Limit High
INT pressTime	1.3.6.1.4.1.22626.1.2.2.15	INTEGER	read-only	Pressure alaram delay
STR pressureHyst	1.3.6.1.4.1.22626.1.2.2.16	DisplayString	read-only	Pressure hysteresis
STR relay1Alarm	1.3.6.1.4.1.22626.1.2.2.17	DisplayString	read-only	Relay 1 alarm
STR relay2Alarm	1.3.6.1.4.1.22626.1.2.2.18	DisplayString	read-only	Relay 2 alarm
STR relay1Hyst	1.3.6.1.4.1.22626.1.2.2.19	DisplayString	read-only	Relay 1 hysteresis
STR relay2Hyst	1.3.6.1.4.1.22626.1.2.2.20	DisplayString	read-only	Relay 2 hysteresis
INT relay1Time	1.3.6.1.4.1.22626.1.2.2.21	INTEGER	read-only	Relay 1 alaram delay
INT relay2Time	1.3.6.1.4.1.22626.1.2.2.22	INTEGER	read-only	Relay 2 alaram delay
INT input1Time	1.3.6.1.4.1.22626.1.2.2.23	INTEGER	read-only	Binary Input 1 alaram delay
INT input2Time	1.3.6.1.4.1.22626.1.2.2.24	INTEGER	read-only	Binary Input 2 alaram delay
INT input3Time	1.3.6.1.4.1.22626.1.2.2.25	INTEGER	read-only	Binary Input 3 alaram delay
readingsint	1.3.6.1.4.1.22626.1.2.3
INT temperaturei	1.3.6.1.4.1.22626.1.2.3.1	INTEGER	read-only	Temperature *10
INT humidityi	1.3.6.1.4.1.22626.1.2.3.2	INTEGER	read-only	Humidity *10
INT cvi	1.3.6.1.4.1.22626.1.2.3.3	INTEGER	read-only	Computed Value *10
INT pressurei	1.3.6.1.4.1.22626.1.2.3.4	INTEGER	read-only	Pressure *10
settingsint	1.3.6.1.4.1.22626.1.2.4
INT tempLowi	1.3.6.1.4.1.22626.1.2.4.1	INTEGER	read-write	Temperature Limit Low *10
INT tempHighi	1.3.6.1.4.1.22626.1.2.4.2	INTEGER	read-write	Temperature Limit High *10
INT humidityLowi	1.3.6.1.4.1.22626.1.2.4.3	INTEGER	read-write	Humidity Limit Low *10
INT humidityHighi	1.3.6.1.4.1.22626.1.2.4.4	INTEGER	read-write	Humidity Limit High *10
INT cvLowi	1.3.6.1.4.1.22626.1.2.4.5	INTEGER	read-write	Computed value Limit Low *10
INT cvHighi	1.3.6.1.4.1.22626.1.2.4.6	INTEGER	read-write	Computed value Limit High *10
INT tempTimei	1.3.6.1.4.1.22626.1.2.4.7	INTEGER	read-write	Temperature alaram delay
INT humidityTimei	1.3.6.1.4.1.22626.1.2.4.8	INTEGER	read-write	Humidity alaram delay
INT cvTimei	1.3.6.1.4.1.22626.1.2.4.9	INTEGER	read-write	Computed value alaram delay
INT tempHysti	1.3.6.1.4.1.22626.1.2.4.10	INTEGER	read-write	Temperature hysteresis *10
INT humidityHysti	1.3.6.1.4.1.22626.1.2.4.11	INTEGER	read-write	Humidity hysteresis *10
INT cvHysti	1.3.6.1.4.1.22626.1.2.4.12	INTEGER	read-write	Computed value hysteresis *10
INT pressLowi	1.3.6.1.4.1.22626.1.2.4.13	INTEGER	read-write	Pressure Limit Low *10
INT pressHighi	1.3.6.1.4.1.22626.1.2.4.14	INTEGER	read-write	Pressure Limit High *10
INT pressTimei	1.3.6.1.4.1.22626.1.2.4.15	INTEGER	read-write	Pressure alaram delay
INT pressHysti	1.3.6.1.4.1.22626.1.2.4.16	INTEGER	read-write	Pressure hysteresis *10
INT input1Timei	1.3.6.1.4.1.22626.1.2.4.17	INTEGER	read-write	Binary Input 1 alaram delay
INT input2Timei	1.3.6.1.4.1.22626.1.2.4.18	INTEGER	read-write	Binary Input 2 alaram delay
INT input3Timei	1.3.6.1.4.1.22626.1.2.4.19	INTEGER	read-write	Binary Input 3 alaram delay
traps	1.3.6.1.4.1.22626.1.2.5
STR messageString	1.3.6.1.4.1.22626.1.2.5.1	DisplayString	read-only	Message giving more detailed information on alarms.
INT alarmTemperature	1.3.6.1.4.1.22626.1.2.5.2	INTEGER	read-only	Temperature alarm 0 = Temperature OK 1 = Temperature too high 2 = Temperature too low
INT alarmHumidity	1.3.6.1.4.1.22626.1.2.5.3	INTEGER	read-only	Humidity alarm 0 = Humidity OK 1 = Humidity too high 2 = Humidity too low
INT alarmCv	1.3.6.1.4.1.22626.1.2.5.4	INTEGER	read-only	Computed value alarm 0 = Computed value OK 1 = Computed value too high 2 = Computed value too low
INT alarmPressure	1.3.6.1.4.1.22626.1.2.5.5	INTEGER	read-only	Pressure alarm 0 = Pressure value OK 1 = Pressure value too high 2 = Pressure value too low
tables	1.3.6.1.4.1.22626.1.2.6
historyTable	1.3.6.1.4.1.22626.1.2.6.1		not-accessible	Table of the history values.
historyEntry	1.3.6.1.4.1.22626.1.2.6.1.1		not-accessible	History values entries.
INT histTemperature	1.3.6.1.4.1.22626.1.2.6.1.1.1	INTEGER	read-only	Temperature reading.
INT histHumidity	1.3.6.1.4.1.22626.1.2.6.1.1.2	INTEGER	read-only	Humidity reading.
INT histComputedValue	1.3.6.1.4.1.22626.1.2.6.1.1.3	INTEGER	read-only	Computed value reading.
INT histPressure	1.3.6.1.4.1.22626.1.2.6.1.1.4	INTEGER	read-only	Pressure reading.
INT histRelay1	1.3.6.1.4.1.22626.1.2.6.1.1.5	INTEGER	read-only	Relay 1 reading.
INT histRelay2	1.3.6.1.4.1.22626.1.2.6.1.1.6	INTEGER	read-only	Relay 2 reading.
INT histInput1	1.3.6.1.4.1.22626.1.2.6.1.1.7	INTEGER	read-only	Binary Input 1 reading.
INT histInput2	1.3.6.1.4.1.22626.1.2.6.1.1.8	INTEGER	read-only	Binary Input 2 reading.
INT histInput3	1.3.6.1.4.1.22626.1.2.6.1.1.9	INTEGER	read-only	Binary Input 3 reading.

RFC description

Environmental monitoring device (temperature, humidity, pressure) for data center infrastructure.

Start monitoring Comet H7531 environmental monitoring sensor with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download H7531-MIB