Makes a phone call & sends a short message to your cellular phone! 1. Once an external switch is closed(ON), SMS-1 sends a short message predesigned by yourself to your own cellular phone. (Short Message Send Service) so, this will let you know something happens! 2. A telephone number for a call, Contents of the messge and password to be sent are memorized in SMS-1 board by yourself. (No need a back-up battery for retaining these datas) 3. Maximum 12-digit telephone number to be memorized for a call. 4. Maximum 16-characters can be memorized as a message text to be sent. 5. 4-digit ID password 6. Provdes easy use for many applications. 7. Power : 12VDC-300mA Adoptor * SMS-1 board User Manual (PDF)*