TERRALINK EC200U

Industrial evaluation board for the EC200 cellular module, exposing its UART interface (G_TX, G_RX), reset (RST_KEY1), and power key (PWR_KEY1) via a 5-pin 2.54 mm header, plus a 2-pin screw terminal for field wiring. Designed for RS-485, CAN, and Modbus-based applications; no onboard power regulation, requiring a stable 3.4, 4.2 V DC supply with up to 2 A peak current. All signal pins are directly connected to the module without level shifting.