\\\"Pioneer in the technology of GSM SMS Alarm Devices, Legato possesses a team of expertise in engineering and programming of sms controllers. GSM SMS Alarm Messenger has been a success worldwide during the past few years. It is widely installed in control and alarm systems for industrial monitoring, power plant, water supply network, geographical control and security. “Temperature & Humidity SMS Alert Controller” is dedicatedly developed for environmental monitoring and control. It sends SMS alarm when temperature or humidity is higher/lower than user preset levels. More importantly, it provides the on/off control of equipments e.g. air ventilation for maintenance in temperature/humidity range. Application is unlimited when temperature and humidity needs to be monitored on site and remotely. Legato Electronics Ltd.