Cast Bell Controllers - GM-870

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Tech Sheet



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The GM-870 allows users to play and program cast bronze bells and enable many other service programs. The system provides a way to instantly ring the bells or program them to play according to the liturgical perpetual calendar. Can be controlled e programmed via PC, wireless, Ethernet, Internet, SD Card, Tablet & Smartphone.



The large 7” graphic colour display allows a good clear  vision of the time programming of the bells. The GM-870 can easily be used by anyone thanks to the straightforward guided instructions available in various languages (Italian, English, French, Spanish, Polish, German , Portuguese, Russian, Romanian, Lithuanian).




Ten instant program buttons are available to allow you to enable or inhibit programmed bell sounds, to adjust clock strikes, quick play bell sounds such as funeral tolls, solemn events, etc. and check service programs (turning on lights or heating, opening of doors/gates, alarm systems, all with the simple touch of a finger.   


The perpetual liturgical calendar allows you to time program and synchronize any event to play without losing memory or overlapping the bell sounds . Connection between the cast bell controller and the bells can be made via twisted pair or via radio where ever  obstructions in the structure exist. A maximum of 1,000 bell sounds can be stored. Programming of the bell sounds can be made either weekly, daily, yearly or for fixed or variable dates. To instantly play a special bell sound simply follow the guided instructions on the screen. The system can also be supplied in a version to play Italian “Ambrosian” type sounds. 


Use of the latest generation of processors make the GM-870 a high-performance device. Thanks to the use of an operating system and proprietary technology we have managed to manufacture a system with a high quality memory. The GM-870 can be programmed  via PC, wireless, Ethernet, Internet, SD Card, Tablet & Smartphone. The system can manage up to 24 external relay outputs.

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Belltron offers its customers a maintenance service at a 360° range to make their daily work easier. These services include : software that meets specific requirements, system information and simple online ordering constantly available, technical support by qualified Belltron technicians by phone, timely intervention in case of system failure.


Belltron-Cloud is the new generation of cloud-based controls available for all Belltron customers to control and program their systems at a distance, from any part of the world. Connection to the Belltron – Cloud server will allow the device to be constantly monitored by Belltron qualified service technicians as well as allowing programming and software upgrades.


Warranty covers the Belltron product from the purchase date from an authorized dealer. The quality and reliability of all Belltron products are tested, thanks to a thorough quality control on every single component made by a dedicated team before they are placed on the market. All our products are conceived, designed and manufactured in Italy entirely in-house.

Dati Aziendali

Sede legale: Aeris elettronica Srl
Via Antonio De Nino n°22 (zona Ind.le Vallecupa) - 64010 - COLONNELLA (TE) - ITALY
P.Iva/C.F.: 01643200676

Capitale sociale: € 80.000,00 i.v. - CCIAA di Teramo - REA 140706
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