Stand-alone speech dialler that can complement any system requiring alerts of changes in system conditions, including temperature monitoring. All messages are sent over standard PSTN line or GSM, enabling SMS and speech messages. Personalised voice messages can be transmitted to up to ten recipients. A complete unit, with keypad and display for programming and set up. With built-in programmable outputs which can be operated remotely over PSTN or GSM. The built-in microphone and speaker adds to the ability to listen in and speak to the site remotely.