Abstract: A wall-mountable spray head unit is shown with a display and/or at least one user input device. The wall-mountable spray head unit is shown deployed in a fire suppression system that includes at least one or at least two wall-mounted spray head units capable of aiming and shooting fire suppressant liquid into a fire.

Abstract: A wall-mountable spray head unit is shown with a display and/or at least one user input device. The wall-mountable spray head unit is shown deployed in a fire suppression system that includes at least one or at least two wall-mounted spray head units capable of aiming and shooting fire suppressant liquid into a fire.

Abstract: A fire suppression system is shown including at least one or at least two wall-mounted spray head units capable of aiming and shooting fire suppressant liquid into a fire.

Abstract: A fire suppression system comprising at least one or at least two wall-mounted spray head units capable of aiming and shooting fire suppressant liquid into a fire is disclosed.

Abstract: A method of monitoring an analog signal output from a sensor comprising comparing the amplitude of the analog signal to a first high and low threshold, setting a primary monitoring signal to a first value when the amplitude of the analog signal exceeds the first high threshold, setting the primary monitoring signal to a second value when the amplitude of the analog signal decreases below the first low threshold, comparing the amplitude of the analog signal to a second high and low threshold, setting a secondary monitoring signal to a first value when the amplitude of the analog signal exceeds the second high threshold, setting the secondary monitoring signal to a second value when the amplitude of the analog signal decreases below the second low threshold, comparing the primary and secondary monitoring signals and determining from the comparison whether an error exists with the monitoring of the analog signal.

Abstract: A method of monitoring an analogue signal output from a sensor comprising comparing the amplitude of the analogue signal to a first high and low threshold, setting a primary monitoring signal to a first value when the amplitude of the analogue signal exceeds the first high threshold, setting the primary monitoring signal to a second value when the amplitude of the analogue signal decreases below the first low threshold, comparing the amplitude of the analogue signal to a second high and low threshold, setting a secondary monitoring signal to a first value when the amplitude of the analogue signal exceeds the second high threshold, setting the secondary monitoring signal to a second value when the amplitude of the analogue signal decreases below the second low threshold, comparing the primary and secondary monitoring signals and determining from the comparison whether an error exists with the monitoring of the analogue signal.