Overview The Enviko CET-20L-CAT1 is a multi-channel intelligent data acquisition unit for structural health and engineering safety monitoring at remote sites. It reads vibrating wire, resistance, voltage, current, thermocouple and RS485 sensors on up to 64 channels, sends data over a CAT1 (4G LTE Category 1) wireless link, and runs on a built-in rechargeable battery with solar charging. With a standby current below 5 μA, it is designed for long-term unattended monitoring of