KC868-A2 ESP32 I/O pin define

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Relay1:15
Relay2:2

DS18B20/DHT11/DHT21/LED strip -1: 33
DS18B20/DHT11/DHT21/LED strip -2: 14

Ethernet (LAN8720) I/O define:

#define ETH_ADDR        0
#define ETH_POWER_PIN  -1
#define ETH_MDC_PIN    23
#define ETH_MDIO_PIN  18
#define ETH_TYPE      ETH_PHY_LAN8720
#define ETH_CLK_MODE  ETH_CLOCK_GPIO17_OUT

RS485:
RXD:35
TXD:32

GSM:
RXD:34
TXD:13


DI1:36
DI2:39

IIC BUS:
SDA:4
SCL:16

it already showed here.