With ADU-500L CDMA Data Logger Telemetry System, several transmitters can send information simultaneously over single communication channel, letting several users share band of frequencies. Battery-powered unit incorporates 2 analog inputs measuring at 12-bit resolution, 3 digital inputs, and I2C interface supporting external digital sensors. SMS messages are used for wireless logged data transfer, event-driven alarm messages, and periodic status messages for verifying unit availability.
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