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M60 Alarm Dialler Digital Voice / VoIP
The M60 was specifically designed for seamless compatibility with Digital Voice and VoIP systems, ensuring full compliance with all VoIP or Digital Voice platforms.
For over 20 years, both our current M60 and previous alarm dialer systems have been successfully connecting to and operating with Digital Voice and VoIP technology.
What is Digital Voice & VoIP?
VoIP (Voice over Internet Protocol) and Digital Voice allow phone calls to be made over the internet instead of traditional analogue PSTN (copper) phone lines.

When you place a call using a Digital Voice or VoIP service, your provider establishes a virtual phone line between you and the recipient over the internet. This experience is typically seamless and comparable to using an analogue line.
In the UK, the shutdown of PSTN analogue lines is planned for completion by the end of 2027. Other countries may have different timelines, with potential exceptions or delays to their published schedules.
Purchasing a New M60
If you’re purchasing a new M60 for use with a VoIP or Digital Voice system, please inform us at the time of purchase. We’ll ensure it includes the appropriate cables for seamless connection to your provider’s Digital Voice or VoIP system.
Migrating a Current System to Digital Voice & VoIP
Migrating an M60 or M30 from a standard PSTN analogue line to a Digital Voice or VoIP system is a simple process, with all existing features and functions remaining fully operational.
In most cases, it only requires reconnecting the existing phone cabling to your new Digital Voice system.
GSM Modules
Our GSM modules are fully compatible with Digital Voice and VoIP systems.
If your current GSM module uses a PSTN connection, migrating to a Digital Voice or VoIP system is typically a straightforward process, requiring only a simple rewire.
SMS Modules
Our Global SMS Modules operate using a SIM card and connect wirelessly to mobile/cellular networks, eliminating the need for PSTN or Digital Voice/VoIP systems.
If you would like more information on Digital Voice & VoIP please Contact us.
Written by M60 GSM Alarm Dialer
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We have released our new updated Global SMS module for our M60 Alarm Dialer, with this new module, you can receive instant alerts via text message when there is an issue with your industrial equipment/site/process etc, ensuring that you are always aware of any problems and can take action immediately.
Our SMS module is designed with the latest technology, providing reliable and secure communication between your M60 Alarm Dialer and your phone. Whether you are on-site or off-site, you can rest assured that you will receive timely alerts and updates, ensuring that you can respond quickly to any issues.
With easy installation and setup, our SMS module is a effective solution for enhancing the functionality of your new or current M60 or M30. It is compatible with a wide range of phone networks, making it the perfect choice for a variety of industries.
LTE and GSM Connectivity.
The SMS module can use the LTE and also the GSM network. Our system has been designed to allow customers to default to best type of network in their area to provide strong coverage.
Networks.
Our new SMS module takes a standard Micro SIM card, this can be either on a contract or Pay As You Go basis.
Messages
The SMS module allows the M60 Alarm Dialer to send individual SMS messages when an alarm occurs. Each input can be separately configured with its own user definable message, this allows you to simply identify the issue. i.e. Instead of getting a “Channel 1 alarm” SMS message you could get a “Power Failure in the Main Laboratory” SMS message.
Global Connectivity.
Our new Module was designed with the global market in mind, so it is fully compatible with all phone networks around the world.
Regions.
Europe, North America, Asia, Australia, Africa, APAC.
GSM/EDGE Bands.
B2 (1900), B3 (1800), B5 (850), B8 (900).
LTE Bands.
B1 (FDD 2100), B2 (FDD 1900), B3 (FDD 1800), B4 (FDD 1700 / AWS), B5 (FDD 850), B8 (FDD 900), B12 (FDD 700ac), B13 (FDD 700c), B17 (FDD 700bc), B18 (FDD 800), B19 (FDD 800), B20 (FDD 800DD), B26 (FDD 850), B28 (FDD 700), B39 (TDD 1900).
Backwards Compatible.
If you currently have an M60 or the older M30 then our 2023 SMS module is fully backwards compatible and can be fitted to your current machine or older SMS modules can be swapped out and replaced with the new version of the SMS module in just a few minutes.
*The only exceptions are some of the early verions of the M30, they will require some upgrades.
Features
The M60 SMS Alarm Dialer standard features include;
- 4, 8, 16, 32 & 56 individual alarm inputs / channels.
- Individual Speech Messages for each input.
- Individual SMS Messages for each input.
- PSTN & Mobile/Cell Options.
- Internal Mains Failure Alarm Sensor.
- 48 Hour Internal Battery Backup.
- Fully Menu and Keypad Driven.
- IP56 Industrial Rated Enclosure.
Because the M60 is built by us in the UK if there are any special features you require for your project we can normally create them for you.
The above is only a small subset of the available features on the M60 SMS Alarm Dialer; for a complete list visit the Standard Features and Optional Features pages or contact us for a quote.
Written by M60 GSM Alarm Dialer
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M60 Sapphire Edition Released
We have just released the M60 Sapphire Edition of our M60 Alarm Dialler, this has been released to celebrate our 65th year in business.
Since 1958 we have been designing Alarm diallers to help protect various industries including, Power/Gas & Oil Stations, Chemical, Pharmaceutical, Building Control systems, Refrigeration, Water Control, Livestock, Waste Control & Landfills.
Our M60 Sapphire Edition is the 10th alarm dialler we have produced since 1958, previous versions include the Mk1, MK3, Level 8, Mk12, Mk12c, MM20, MD20, M30, M60.
Not only is this the special anniversary edition, but it is also the most advanced version we have ever produced. The M60 Sapphire edition comes with our new global SMS module, 4G Mobile/Cell Phone Voice connectivity and the ability to connect to VOIP Digital communications systems.
Other Features include;
- 4, 8, 16, 32 & 56 individual alarm inputs / channels.
- Individual Speech Messages for each input.
- Individual SMS Messages for each input.
- VOIP Digital Connectivity.
- PSTN & Mobile/Cell Options.
- Internal Mains Failure Alarm Sensor.
- 48 Hour Internal Battery Backup.
- Fully Menu and Keypad Driven.
- IP56 Industrial Rated Enclosure.
Our Industrial Alarm diallers have come a long way since our very first version 1958 with its voice messages being stored on reel to reel tape, below are some of the earlier models.

Photos of the Mk1, Mk3, MM20 and MD20 Alarm Diallers.
For more information visit the Standard Features and Optional Features pages or contact us for a quote.
Written by M60 GSM Alarm Dialer
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SIM Alarm Dialer
The M60 Sim Alarm Dialer is a purpose built automatic Alarm Dialer for use in industrial/commercial settings where there is a need to monitor critical processes / systems / buildings / livestock / people etc. The M60 can send SMS and or Voice Messages over the 2G, 3G and 4G mobile/cell phone networks inorder to send the notification of alarms to the required recipients.
Alarm Inputs
The M60 Sim Alarm Dialer comes in 4, 8, 16, 32 and 56 input versions. Every Alarm Input on the M60 comes with its own individual User Recordable/definable voice alarm message and also SMS alarm message (if applicable).
This allows you define messages to enable to easily identify what alarm has been triggered. E.g. Instead of “Alarm 1” you could get “High Temp In Building Beta” 
Alarm inputs can be NO/NC (Normally Open/Normally Closed) volt free contacts or with the analogue upgrade you can set up triggers on 4 to 20 ma, 0 to 10 ma, 0 to 20 ma, DC Voltage and Potentiometric transducers.
SIM Card
The M60 can accept any standard full sized mobile/cell phone SIM card, the main exception are the “special” SIM Cards that automatically swap to the strongest networks. Unless you are have the Email upgrade you don’t need any data allowance on your phone contract, just voice and SMS.
Before use we recommend that the voicemail and PIN numbers are removed before use and some networks may need to you provide the IMEI number in order to connect to their network (this is mainly in the USA).
We would recommend you get the SIM card for whichever network has the strongest signal in the installation location and also to get it on contract if possible so you don’t have to worry about running out of credit
Features
The M60 comes with many features as standard including; An integrated battery backup, integrated mains failure detection, protected inputs, alarm outputs that can be used to trigger external devices such as sirens or strobes and also a large user friendly keypad and backlit LCD display.
Below are a small number of the features that come either as standard or as options.
The M60 SIM Alarm Dialer standard features include;
- 4, 8, 16, 32 & 56 individual alarm inputs / channels.
- Individual Speech Messages for each input.
- Individual SMS Messages for each input.
- PSTN & Mobile/Cell Options.
- Internal Mains Failure Alarm Sensor.
- 48 Hour Internal Battery Backup.
- Fully Menu and Keypad Driven.
- IP56 Industrial Rated Enclosure.
Because the M60 is built by us in the UK if there are any special features you require for your project we can normally create them for you.
The above is only a small subset of the available features on the M60 SIM Alarm Dialer; for a complete list visit the Standard Features and Optional Features pages or contact us for a quote.
Written by M60 GSM Alarm Dialer
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Cryogenic Storage Dewar Alarm System
Our M60 Alarm Dialler system is designed for use in industrial and laboratorial environments, and for the protection, monitoring and reporting of systems such as Cryogenic Storage Dewars.
The Dewar storage system is a unique type of vacuum flask that is used for holding/storing cryogens such as liquid helium and nitrogrem where their boiling points are lower than room temperature; Dewars are named after their designer James Dewar.
Cryogenic Storage Dewars have various alarms that can be easily connected to our M60 for monitoring and alarm communication in the event of a problem. Some of the items that are rutinly monitored are listed below.
- High Pressure Alarm.
- Safety Valves Alarm.
- Excessive Vapour Pressure.
- Gas Alarm.
- Room Oxygen Levels.
- Mains failure.
We have been designing and manufacturing Alarm Dialler systems since 1956 and the M60 is our latest version. It is easy to use with an LCD display and keypad; it comes with features such as an integrated battery backup, remote integration and an event viewer.
Voice Alarm Messages
As standard each input on the M60 has its own voice message that can be simply recorded by the user , so you can replace a “channel 12” alarm message with a more usefull “High Pressure Alarm in room 2” message.
We also provide a custom voice message recording service.
SMS Messages
Every input on the M60 can have its own unique user configurable SMS message to allow the recipient to easily identify what the alarm is.
Alarm Inputs
The M60 comes in 4,8,16 and 56 input versions. Each input can be individually configured to be either Normally Open or Normally Closed alarm circuits.
The M60 also offers 4 analogue inputs; these inputs can be configured as 4 to 20 ma, 0 to 10 ma, 0 to 20 ma, DC Voltage, Potentiometric transducer and fully floating.
PSTN / Mobile / Cell Phone connection
The M60 can connect to multiple communication mediums including a standard PSTN land line and the Mobile/Cell Phone networks.
The M60 can send Voice messages over the PSTN network and voice and SMS messages over the Mobile/SMS network.
The Mobile/Cell Phone connection can also be used as a backup option, the M60 will monitor the connected PSTN landline and if the connected landline fails it will automatically switch over.
The M60 Cryogenic Storage Dewar Alarm System standard features include;
- 4, 8, 16, 32 & 56 individual alarm inputs / channels.
- Individual Speech Messages for each input.
- Individual SMS Messages for each input.
- PSTN & Mobile/Cell Options.
- Internal Mains Failure Alarm Sensor.
- 48 Hour Internal Battery Backup.
- Fully Menu and Keypad Driven.
- IP56 Industrial Rated Enclosure.
Because the M60 is built by us in the UK if there are any special features you require for your project we can normally create them for you.
The above is only a small subset of the available features on the M60 Cryogenic Storage Dewar Alarm System; for a complete list visit the Standard Features and Optional Features pages or contact us for a quote.
Written by M60 GSM Alarm Dialer
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Multi Input Alarm Dialer
Our M60 is a Multi Input Alarm Dialer, designed for use in commercial and Industrial environments.
As a Professional Multi Input Alarm Dialer, it comes with all the features you would expect such as voice and SMS messaging, ability to setup multiple dial out groups, integrated battery backup, easy to use LCD interface, and is fully serviceable/repairable.
The M60 is used around the world to Monitor and Protect industries such as Livestock Protection, Horticulture Protection, Power Generation, Building Management, Pharmaceutical, Cold Storage and Fire Alarms.
Multi Input
The M60 provides up to 56 separate inputs, with the M60 coming in 4, 8, 16, 32 or 56 input versions every input can be individually enabled/disabled and setup as either Normally Open or Normally Closed alarm circuits.
Every input has its own user recordable voice message and or SMS text message, as they are user configurable you are not stuck with a “channel 24 alarm” you can set up a useful alarm message for example “Power failure in building 4”.
The M60 also offers 4 analogue inputs; these inputs can be configured as 4 to 20 ma, 0 to 10 ma, 0 to 20 ma, DC Voltage, Potentiometric transducer and fully floating.
PSTN / Mobile / Cell Phone connection
The M60 can connect to multiple communication mediums including a standard PSTN land line and the Mobile/Cell Phone networks.
The M60 will send Voice messages over the PSTN network and voice and SMS messages over the Mobile/SMS network.
The Mobile/Cell Phone connection can also be used as a backup option, the M60 will monitor the connected PSTN landline and if the connected landline fails it will automatically switch over.
The M60 Multi Input Alarm Dialer standard features include;
- 4, 8, 16, 32 & 56 individual alarm inputs / channels.
- Individual Speech Messages for each input.
- Individual SMS Messages for each input.
- PSTN & Mobile/Cell Options.
- Internal Mains Failure Alarm Sensor.
- 48 Hour Internal Battery Backup.
- Fully Menu and Keypad Driven.
- IP56 Industrial Rated Enclosure.
Because the M60 is built by us in the UK if there are any special features you require for your project we can normally create them for you.
The above is only a small subset of the available features on the M60 Multi Input Alarm Dialer; for a complete list visit the Standard Features and Optional Features pages or contact us for a quote.
Written by M60 GSM Alarm Dialer
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