Abstract: A liquid level sensor includes a base member disposed above the liquid. A lever arm is pivotally attached to the base member. The lever arm is configured to interact with the liquid so that it has an angular displacement relative to the base member. The angular displacement is a function of the level of the liquid in the liquid channel. A sensor senses angular displacement of the lever arm. A communications circuit transmits the angular displacement of the lever arm to a remote location. In a method of detecting a liquid level, a float that is buoyant in the liquid is placed into the liquid and is coupled to a lever arm. An angular displacement of the lever arm relative to a base member is measured. The liquid level is a function of the angular displacement of the lever arm.

Abstract: A sensor unit detects an open vacuum interface valve coupled to a gravity sump that is pneumatically coupled to an air relief tube of a vacuum sewage system. The sensor unit includes an open valve sensor, a communication device, a processor and a power source. The open valve sensor is affixed to the air relief tube. The processor is in electronic communication with the open valve sensor and the communication device. The processor is configured to read a sensed value from the open valve sensor and cause the communication device to transmit an alarm signal when the sensed value meets predefined criteria. The power source provides power to the open valve sensor and to the communication device.

Abstract: In a method of transmitting an event notification, a first data packet that includes a first event code is transmitted to a first individual via a not-automatically receipt confirmed communication. Upon receiving a response communication from the first individual, the first individual is requested to respond with the first event code. If the first individual responds by transmitting the first event code, then the first event is identified from the first event code. Instructions relating to the first event are transmitted to the first individual. The status of notifications is displayed on a map which is displayed on a computer screen.

Abstract: In a method of transmitting an event notification, a first data packet that includes a first event code is transmitted to a first individual via a not-automatically receipt confirmed communication. Upon receiving a response communication from the first individual, the first individual is requested to respond with the first event code. If the first individual responds by transmitting the first event code, then the first event is identified from the first event code. Instructions relating to the first event are transmitted to the first individual. The status of notifications is displayed on a map which is displayed on a computer screen.

Abstract: In a method of transmitting an event notification, a first data packet that includes a first event code is transmitted to a first individual via a not-automatically receipt confirmed communication. Upon receiving a response communication from the first individual, the first individual is requested to respond with the first event code. If the first individual responds by transmitting the first event code, then the first event is identified from the first event code. Instructions relating to the first event are transmitted to the first individual. Status of notifications are displayed on a map which is displayed on a computer screen.

Abstract: An alarm detection device for monitoring high level signal in a wet well. The alarm detection device includes a fail safe circuit and an emulation circuit. The incoming high level signal is fed into the fail safe circuit and the emulation circuit. The emulated signal from the emulation circuit is fed to an output to a control panel and an alarm system. If there is any problem with the alarm detection device, the fail safe circuit connects the incoming high level signal directly with the output to the control panel and a high impedance signal is generated for the alarm system. The alarm detection device is powered independently from the control panel.