Sell sensaphone 800 basic monitoring system @Hong Kong

Built-in : Power failure, Sound Level, Temperature
        Inputs : 8-contact or temperature
        Outputs : 1 relay (manual or automatic control)
        Notification : 8 custom voice phone calls

Special Features : Built-in thermostat contorl

When you need to monitor additional conditions, or need to notify more people, the 800 is the best choice. It has all of the same features as the 400, but instead of four external inputs, it is equipped with eight, and can notify eight rather than four phone numbers using the same custom voice phone calll technology.

As with the 400, one of the external inputs comes with a local temperature sensor already installed, and a build in relay is availabel for remotely controlling a thermostat or other output device.