Temperature & Humidity Sensor

We require a wireless serial bridge to replace the wired RS485 connection between fuel dispensers and the forecourt controller in fuel station automation systems. The solution must offer fully bidirectional RS485 communication with transparent transmission and very low deterministic latency, behaving as a direct serial cable replacement.

I am sourcing a LoRa development board for an IoT project in the EU region (868 MHz band). The board must meet the following requirements: - LoRa module (868 MHz EU band, such as SX1262 or SX1276) - Integrated microcontroller (e.g., STM32, ESP32, or ASR) - USB port (USB-C preferred or Micro-USB) for power and programming - Battery connector (2-pin for Li-Po cell) - SMA antenna connector - Pre-soldered pin headers No need for Wi-Fi, Bluetooth, display, enclosure, or GPS. Quantity required: 1000 to 3000 pieces. Please provide information on: - Available models and product details - Unit price for the quantities - Alternative designs - Price difference for boards with pre-soldered headers and without display/case - Production and delivery time to Portugal - Payment terms - OEM/ODM services