Tasmota Components

	A	B	C
1	255	User	GPIO configurable in modules
2	0	None	Not used
3	1	DHT11	DHT11 sensor
4	2	AM2301	AM230X, DHT21 and DHT22 sensor
5	3	SI7021	Only for Sonoff Si7021, not the i2c version
6	4	DS18x20	Dallas Semiconductor DS18b20 1-Wire temperature sensor
7	5	I2C SCL	I2C serial clock pin, used with any I2C component (sensors, displays, ...)
8	6	I2C SDA	I2C serial data pin, used with any I2C component (sensors, displays, ...)
9	7	WS2812	Addressable LEDs such as WS281X or Neopixel
10	8	IRsend	IR Transmitter LED
11	9	Switch1	Switch
12	10	Switch2	Switch
13	11	Switch3	Switch
14	12	Switch4	Switch
15	13	Switch5	Switch
16	14	Switch6	Switch
17	15	Switch7	Switch
18	16	Switch8	Switch
19	17	Button1	Button
20	18	Button2	Button
21	19	Button3	Button
22	20	Button4	Button
23	21	Relay1	Relay
24	22	Relay2	Relay
25	23	Relay3	Relay
26	24	Relay4	Relay
27	25	Relay5	Relay
28	26	Relay6	Relay
29	27	Relay7	Relay
30	28	Relay8	Relay
31	29	Relay1i	Relay inverted
32	30	Relay2i	Relay inverted
33	31	Relay3i	Relay inverted
34	32	Relay4i	Relay inverted
35	33	Relay5i	Relay inverted
36	34	Relay6i	Relay inverted
37	35	Relay7i	Relay inverted
38	36	Relay8i	Relay inverted
39	37	PWM1	Pulse Width Modulated Output
40	38	PWM2	Pulse Width Modulated Output
41	39	PWM3	Pulse Width Modulated Output
42	40	PWM4	Pulse Width Modulated Output
43	41	PWM5	Pulse Width Modulated Output
44	42	Counter1	Counter Input
45	43	Counter2	Counter Input
46	44	Counter3	Counter Input
47	45	Counter4	Counter Input
48	46	PWM1i	Pulse Width Modulated inverted Output
49	47	PWM2i	Pulse Width Modulated inverted Output
50	48	PWM3i	Pulse Width Modulated inverted Output
51	49	PWM4i	Pulse Width Modulated inverted Output
52	50	PWM5i	Pulse Width Modulated inverted Output
53	51	IRrecv	IR Receiver Input (for example TSOP1838)
54	52	Led1	LED
55	53	Led2	LED
56	54	Led3	LED
57	55	Led4	LED
58	56	Led1i	Inverted LED - default state ON
59	57	Led2i	Inverted LED - default state ON
60	58	Led3i	Inverted LED - default state ON
61	59	Led4i	Inverted LED - default state ON
62	60	MHZ Rx	MHZ 19 CO2 Sensor
63	61	MHZ Tx	MHZ 19 CO2 Sensor
64	62	PZEM0XX Tx	Peacefair Pzem-0XX Power Meter Tx pin
65	63	PZEM004 Rx	Peacefair Pzem-004 Power Meter Rx pin
66	64	SAir Rx	Sensor Senseair
67	65	SAir Tx	Sensor Senseair
68	66	SPI CS	SPI Interface (ePaper Display)
69	67	SPI DC	SPI Interface (ePaper Display)
70	68	BkLight	Backlight (Display)
71	69	PMS5003	PMS5003 Air Quality Sensor
72	70	SDS0X1 Rx	Nova Fitness SDS011 Laser Dust Sensor Rx pin
73	71	SerBr Rx	Serial Bridge Receive
74	72	SerBr Tx	Serial Bridge Transmit
75	73	SR04 Tri	Ultrasonic Sensor HC-SR04 Trigger pin
76	74	SR04 Ech	Ultrasonic Sensor HC-SR04 Echo pin
77	75	SDMx20 Tx	SDMx20-Modbus Multifunction Power Analyser Tx pin
78	76	SDMx20 Rx	SDMx20-Modbus Multifunction Power Analyser Rx pin
79	77	SDM630 Tx	SDM630-Modbus Multifunction Power Analyser Tx pin
80	78	SDM630 Rx	SDM630-Modbus Multifunction Power Analyser Rx pin
81	79	TM16 CLK	TM1638 Switch Module
82	80	TM16 DIO	TM1638 Switch Module
83	81	TM16 STB	TM1638 Switch Module
84	82	Switch1n	Switch, no pullup resistor
85	83	Switch2n	Switch, no pullup resistor
86	84	Switch3n	Switch, no pullup resistor
87	85	Switch4n	Switch, no pullup resistor
88	86	Switch5n	Switch, no pullup resistor
89	87	Switch6n	Switch, no pullup resistor
90	88	Switch7n	Switch, no pullup resistor
91	89	Switch8n	Switch, no pullup resistor
92	90	Button1n	Button, no pullup resistor
93	91	Button2n	Button, no pullup resistor
94	92	Button3n	Button, no pullup resistor
95	93	Button4n	Button, no pullup resistor
96	94	Counter1n	Counter sensor, no pullup resistor
97	95	Counter2n	Counter sensor, no pullup resistor
98	96	Counter3n	Counter sensor, no pullup resistor
99	97	Counter4n	Counter sensor, no pullup resistor
100	98	PZEM016 Rx	Peacefair Pzem-016 Power Meter Rx pin