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One primary and one with an eye towards doing it all in one module with integral chip antenna (http://ww1.microchip.com/downloads/en/DeviceDoc/60001380C.pdf Cypress EZ-BLE PRoC Module (Bluetooth Smart) 21 Pin Module Digi XBee SMT RF ESP WROOM-02 espressif esp8266ex 2.4 GHz Wi-Fi https://www.espressif.com/sites/default/files/documentation/esp32-s2-wroom_esp32-s2-wroom-i_datasheet_en.pdf 2.4 GHz Wi-Fi and Bluetooth module, https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32d_esp32-wroom-32u_datasheet_en.pdf 2.4 GHz Wi-Fi Bluetooth external antenna espressif 15.4*15.4mm ESP32-S2-WROVER(-I) 2.4 GHz Bluetooth ble zigbee 802.15.4 flash crypto ATSAMR21G18 AT45DB041E TECC508A U.Fi Class 4 Bluetooth Module without antenna Low-Power Long Range LoRa Transceiver Module rf module lora lorawan Multiprotocol radio SoC module https://www.raytac.com/download/index.php?index_id=43 wireless 2.4 GHz Wi-Fi Bluetooth external antenna espressif 15.4*15.4mm ESP32-S2-WROVER(-I) 2.4 GHz Wi-Fi and Bluetooth combo chip https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32_datasheet_en.pdf Single 2.4 GHz Wi-Fi and Bluetooth module, https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32e_esp32-wroom-32ue_datasheet_en.pdf NINA-B111 LGA module 42 Pin https://content.u-blox.com/sites/default/files/NINA-B1_DataSheet_UBX-15019243.pdf#page=30 NINA ublox u-blox b111 bluetooth nrf52840 module Omron Relay, SPST, https://omronfs.omron.com/en_US/ecb/products/pdf/en-g2rl.pdf Omron G5V-2 Relay DPDT Finder 40.51 Pitch 5mm relay dpdt fujitsu tht Kemet signal relay, DPDT, non-latching, single coil latching surface mount PLCC, 20 pins, dual row female, vertical entry, PN:G125-FVX2005L0X Harwin Gecko Connector, 26 pins, dual row male, vertical entry, no latches, PN:G125-MVX5005L0X Harwin Gecko Connector, 6 pins, pitch 7.5mm, size 82.5x10.3mm^2, drill.

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