The zSeries wireless sensor/transmitter system provides Web-based monitoring of temperature, humidity and barometric pressure, as well as thermocouples and transducers with analog voltage or current output. They can run on voltages between 10 to 30 V dc or 24 V ac. The electronics are protected in a polycarbonate NEMA4/IP65-rated housing. Alarm notifications can be sent via e-mail or text messages to cell phones.