T-Relay Style:T-Relay Set[H516+Q320] 7-inch Ultra-low Power E-paper Driver

7-inch Ultra-low Power E-paper Driver IC  EDO47TC1 Size 4

GPS ceramic antenna

Flash 64kb PSRAM 8kb Onboard Button Reset Button + WS2812 + Encoder

WS2812 RGB LED Supply Mode USB / 21700 battery / 18650 battery + spring L76K GNSS Module Support GPS

5 dBm @ 11b

T-Relay Style:T-Relay Set[H516+Q320] 7-inch Ultra-low Power E-paper DriverLILYGO TTGO T Relay ESP32 Wireless Module DC 5V 4 Groups Relay Development Board 4MB Flash WiFi Bluetooth Remote Switch Control Specifications MCU ESP32 FLASH 4MB PS RAM 8MB Bus Interfaces UART, SPI, I2C, CAN, 12S, SDIO Wireless Wi Fi 802. 11 b g n Bluetooth BLE V4. 2 Onboard Functions 4 Groups of relays Optocoupler Isolation 16 Expansion GPIO HRS4H S DC5V Relay: 4 Blue LEDs Relay Work Indicator K1 Relay: GPIO21 K2 Relay: GPIO19 K3 Relay: GPIO18 K4