Profile: Sentry Telemetry is a supplier of wireless telemetry systems. We avail a wide range of systems for various applications. Our SentryGSM2E provides solutions for a wide range of remote monitoring, metering, and alarm messaging applications. Its features are listed as 1 to 3 digital inputs, dual/tri band GSM, programmable messages, numerous message recipients, battery operated with optional mains or solar power configuration, internal/external antenna, and magnetic key fob activation. Various sensors, gauges, meters, and equipment can be connected to it by hard wire utilizing a Zone 0 protective interface. Alarms, data, or action messages can be sent to multiple recipients via SMS or GPRS. We present with SentryGSM3DLogger for data logging applications. Its primary function is data logging for meters and sensors. Its features are listed as 10 digital inputs, 2 analogue inputs, post logged data to server, programmable intervals, Quad band GSM, simple user configuration, DIN rail mounted, internal/external antenna, and OTAP remote provisioning.