EL-SMS Support

No, it is a temperature alert device rather than a temperature logging device, and does not log temperature readings.

4 x AA alkaline batteries. We also recommend that only high quality alkaline batteries are used, to ensure the best possible battery life.

When the device is in Standby mode, press the “Status” button, and the red LED will light for 1.5s if the battery is low. When the device is in Run mode, it will send a low battery alert text message.

There is a battery cover on the rear of the unit which can be removed by hand.

The expected battery life at room temperature, sending a daily summary message and up to one alarm notification per week, is one year.

No, it will be stored in internal memory.

No, it is battery power only.

A micro SIM card.

No, this must be purchased from your mobile network of choice.

Check that no PIN code lock is enabled on the SIM. If necessary, fit the SIM card into a normal mobile phone to disable the PIN code lock.

The device is configured via the EL-SMS App, available for Android and iOS. The EL-SMS App creates a configuration SMS which is sent to the device to perform device configuration. Please refer to the User Manual for more information.

The Android version is available from the Google Play store, and the iOS version from the App Store. The app is free.

After sending the configuration SMS, you will receive a “Setup complete” message to your phone.

Check that the SIM card is fitted correctly in the device, and that it has credit on it. There also needs to be sufficient mobile signal at your location, otherwise the device may be unable to register on the mobile network. If the device is unable to register after two minutes, it will exit the setup attempt. This will be indicated by five short beeps from the sounder and five red LED flashes when the status button is pushed.

The device can be configured to send periodic summary messages to confirm it is running normally.

You need an Android or Apple smartphone, and the Operating System requirements are given in another FAQ.  The phone must have the ability to send and receive text messages.

Android version 4.0.3 and up.

The App is compatible with iOS versions 9.2 and above.

The product has an IP rating of IP53 providing the thermistor probe is connected. This gives:
– Protection against solid bodies larger than 1mm.
– Protection against water droplets deflected up to 15° from vertical.

If you wish to use the unit outdoors, the thermistor probe must be connected and the unit should be positioned in a sheltered location.

The GSM (Global System for Mobile Communications) Network.

Anywhere where there is sufficient mobile signal from the mobile network service you intend to use.

Providing there is adequate signal to send a message, you will be shown the signal strength in bars within the “Setup complete” message that is sent to your phone upon successful configuration.

Up to three. Note that specifying more phones for notification will significantly reduce the expected battery life and may incur additional costs as more messages are sent.

No, you cannot.

Check the SIM card is fitted correctly, does not have a PIN code lock on it and is not faulty, and that there is adequate signal strength at the location. This can be done by using a mobile phone to observe the signal strength available.

Yes.  You can use the EL-SMS App to configure the device to use either Celsius or Fahrenheit and then set alarms accordingly.

Press the “Status” button for five seconds while holding down the “Stop” button for at least one second. The unit will stop monitoring, show the green LED for three seconds and then reset. The power up LED sequence will then be displayed and the unit will be in the standby mode in an “unconfigured” state.

This is done by sending a new configuration SMS to the device, using the App.

While the configuration SMS could be sent from any location, there still needs to be a person with the device, as the “Status” button on the device needs to be pressed for five seconds to begin the setup sequence.

Press the “Status” button for one second. The device will show either four green or five red LED flashes. Four green LED flashes mean the unit is ready to begin its first setup attempt. Five red LED flashes mean that the last attempt to set up the unit failed but it is ready for another attempt.

Please refer to the User Manual where LED flash sequences are explained.

Mobile network connection status is only shown when the device is trying to send or receive a SMS, and is indicated by the orange Netlight status LED on the front of the device. This will flash every 0.8s when the device is not connected, and change to flashing every 2s when connected.

We recommend recalibration on an annual basis; however your procedures may require something else. Please contact us for information on the calibration services we offer.

The time on the device is set when it receives a configuration SMS from the App. If there is a delay in the device receiving the configuration SMS, then the time on the device will lag behind the time on the mobile phone used to configure the device.

One major network has expressed their intention to keep its 2G network operational in Europe until at least 2025, so a 2G network should be available for the foreseeable future.