HAM ThermoSenseX2

The HAM ThermoSenseX2 logs the temperature at two points with two probes on cables. With one device you monitor two fridges, two freezers, or one fridge and one freezer.

The serial number starts with e12:. The older version has a serial number that starts with 29:.

What it measures

Reading	Unit	Note
Temperature	°C	From the first probe.
Temperature 2	°C	From the second probe.
General input 1, 2	open / closed	For a magnetic door contact. Shows when you configure the input.
Input counter 1, 2	count	Counts the changes of the input. Shows when it has counted something.

The app shows a general input as Gen. In. until you give it a name, for example “Cold room door”.

Typical uses

Two fridges or freezers side by side, with one device.
A cold room and its anteroom.
Room temperature and fridge temperature together.
Temperature records for HACCP.

HACCP and cold chain

HAM loggers are used for HACCP temperature records. Each reading has a date and time and stays in your account. You can export reports for the inspection. A calibration certificate is available per device, as a separate line on the order.

Installation

Put the white box outside the cold areas. Attach it with double-sided tape.
Put each probe through the door gasket or through a special opening. Ask your refrigeration technician about the opening.
Write down which probe goes to which fridge.
Connect the 5 V micro-USB adapter that comes in the box.
Connect the device to WiFi from the mobile app. Press and hold the setup button until the green LED blinks. See Connect to WiFi.

When the device is connected, the green LED stays on. See LED states.

Do not put the probes near the door, in front of the fan, near the lamp, or against walls and products. For more, see physical installation.

Terminals

The two probes connect to terminals 3 (3.3 V, red), 4 (data, yellow) and 6 (GND, black).
The general inputs are terminals 7 and 8.
To power the device without USB, connect 5-12 V DC to terminals 1 (+) and 2 (GND).

Settings

Calibration table (in Advanced): field correction, up to 6 points. There is one table for each probe. Press Calibrate to fill it in.
General input is alarm output: the last general input becomes an alarm output. A rule with the action Alarm output turns it on. With a relay module you can give a signal to an alarm system.
Alarm buzzer mode (e12 only): the device makes a sound when an alarm is active. It is on by default.

The general settings of all devices are in device settings.

Recommended rules

The Recommended setups button on the device page suggests:

An alert when the temperature goes out of range.
An alert when the device stops sending data.

Make one range rule for each probe. A fridge and a freezer have different limits. The offline alert also tells you about a power cut or an internet outage at the site.

See Your first alert and offline alerts.

Troubleshooting

The two probes show swapped values: the probes are in the opposite fridges. Swap their positions.
The temperature is a few degrees off: check the position of the probe. See wrong values.
The door contact always shows open: the labels can be inverted, or the magnet is too far away.
Gaps in the chart: see chart gaps.
The device is offline: see device offline.

Specifications


Probes	2, digital, stainless steel, waterproof, on cables
Cable length	Depends on the product code. You can extend it by several metres.
Accuracy	±0.5 °C
Power	5 V micro-USB adapter (included) or 5-12 V DC on terminals 1 and 2 (connection by a technician)
General inputs	2, for magnetic contacts
Connectivity	WiFi 2.4 GHz
Measuring range	-50 to 100 °C
Resolution	0.1 °C
Device operating temperature	-10 to 55 °C (5 V), -10 to 40 °C (12 V)
Dimensions	55 x 44.1 x 21.5 mm
Material	ABS V-0

To buy, see the shop.

Documents

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