E160-TxF12S2 OOK Wireless Transmitter Module

Introduction
Against the backdrop of rapid expansion in the global consumer electronics and smart home markets, Grand View Research data shows that the global wireless remote control device market size reached US$19.8 billion in 2025, with an expected CAGR of 7.2% by 2030. Among them, Sub-1GHz OOK/ASK modulation solutions, with their advantages of low cost, low power consumption and strong anti-interference capability, account for more than 70% of the consumer remote control product market share. Chengdu Ebyte Electronic Technology Co., Ltd., a leading domestic provider of wireless communication solutions, has launched the E160-TxF12S2 OOK wireless transmitter module for low-cost remote control scenarios, which has become an ideal choice for small home appliances, toys, access control and other fields with its ultra-high cost-effectiveness and industrial-grade reliability.

Based on official manual parameters, this article comprehensively analyzes the technical features, application solutions and deployment guidelines of the E160-TxF12S2, providing selection references for consumer electronics developers.

Table of Contents

Core Product Features

Detailed Technical Specifications

Hardware Design and Pin Definition

Software Development and Coding Rules

Typical Applications and Reference Circuits

Frequently Asked Questions and Solutions

Soldering and Mass Production Guide

Selection Reference and Supporting Solutions

1. Core Product Features The E160-TxF12S2 is an OOK/ASK modulated wireless transmitter module specially designed for low-cost remote control scenarios. It has a built-in high-performance RF chip and power amplifier, factory-cured EV1527 standard encoding and 20bits unique address code, enabling rapid productization without additional encoding development. The core advantages are as follows:

Feature Category
Specific Parameters

Modulation Method
OOK/ASK (Amplitude Shift Keying/On-Off Keying)

Operating Frequency Band
315MHz (E160-T3F12S2) / 433.92MHz (E160-T4F12S2)

Transmit Power
+13dBm (@3.3V power supply)

Communication Range
Up to 210m in ideal environment (paired with E160-RxMD2 receiver module, 1.5dBi antenna, 2m height)

Power Consumption Performance
Transmit current 10mA, sleep current only 1μA

Encoding Features
Built-in EV1527 standard encoding, factory-cured 20bits unique address code (million groups without repetition)

Button Support
3 independent input pins, expandable to 6 buttons through combination

Reliability Design
±4KV ESD electrostatic protection (±6KV for RF pin), industrial temperature range of -40℃~+85℃

Power Supply Features
Wide voltage 1.8V~3.6V, supports button battery power supply

Dimensions
20.4×13.3×2.5mm ultra-small size, stamp hole SMD package

Each module has a globally unique 20bits address code, with an address repetition probability of only one in a million, effectively avoiding crosstalk between different devices.

1. Detailed Technical Specifications 2.1 RF Parameters

RF Parameter
Parameter Value
Remarks

Operating Frequency
315MHz / 433.92MHz
Two models available

Modulation Method
ASK/OOK
Amplitude shift keying modulation

Maximum Transmit Power
13±1.0dBm
Typical value, @3.3V power supply

Harmonic Suppression

45dBc
@433MHz, second harmonic

Transmission Rate
28kbps
Fixed value

Frequency Offset

±0.05MHz

Antenna Impedance

50Ω

Reference Communication Range
210m
Paired with E160-RxMD2 receiver module, clear open environment

2.2 Electrical Parameters

Electrical Parameter
Minimum
Typical
Maximum
Remarks

Operating Voltage
1.8V
3.3V
3.6V
≥3.3V ensures maximum output power, exceeding 3.6V has burn-out risk

Communication Level
1.8V
3.3V
3.6V
Consistent with power supply voltage

Transmit Current

10.0mA

Instantaneous power consumption @3.3V power supply, 433.92MHz, 13dBm transmission

Sleep Current

1μA

Automatically enters sleep when no data is sent

ESD Protection
-4KV

+4KV
HBM standard, ±6KV for RF pin

Operating Temperature

-40℃

+85℃
Industrial-grade design

Operating Humidity

10%rh

90%rh

Storage Temperature

-65℃

+150℃

2.3 Hardware Parameters

Hardware Parameter
Parameter Value
Remarks

Crystal Frequency
26.25MHz (315MHz version) / 26.2982MHz (433MHz version)

Module Dimensions
20.413.32.5mm
LWH

Antenna Form

Stamp hole

Communication Interface
GPIO
1.8~3.6V level, 3.3V recommended for reliability

Package Form
SMD/stamp hole
Pin pitch 2.54mm

Weight

3.65g

1. Hardware Design and Pin Definition 3.1 Pin Layout The E160-TxF12S2 adopts a 9-pin SMD package. The core pin definitions are as follows:

Pin Number
Pin Name
Direction
Function Description

1
K0
Input
Button input pin, active low, at least 100ms duration, key value "0001"

2
K1
Input
Button input pin, active low, at least 100ms duration, key value "0010"

3
K2
Input
Button input pin, active low, at least 100ms duration, key value "0100"

4
NC
Output
LED output pin, active low, outputs low when button is pressed, outputs high when released

5
VDD
Power
DC 1.8~3.6V power input

6

GND

Power ground

7

GND

Power ground

8

GND

Power ground

9
ANT
Output
Antenna pin, only transmits signals, no receiving function

Combined button expansion: Through button matrix design, up to 6 button functions can be realized, corresponding key values: K3="1000", K4="0101", K5="0110"

3.2 Hardware Design Notes

Power Design: It is recommended to use a DC regulated power supply with ripple coefficient less than 100mV, reserve more than 30% power margin, ensure reliable grounding of the module, and do not reverse the positive and negative poles of the power supply.

Wiring Specification: High-frequency digital traces, analog traces and power traces should avoid passing under the module. If necessary, lay copper on the contact layer of the module and ground it well, and the traces should be placed on the bottom layer.

Electromagnetic Compatibility: The module should be kept away from strong electromagnetic interference sources such as power supplies, transformers and high-frequency wiring, and maintain an appropriate distance from 2.4GHz devices such as USB 3.0.

Antenna Deployment: The antenna should be exposed as much as possible and vertically upward. If installed in a metal case, an antenna extension cable must be used to lead it out to avoid significant signal attenuation.

1. Software Development and Coding Rules The E160-TxF12S2 has built-in EV1527 standard encoding, no additional encoding development is required, and it can be directly used with the E160-RxMD2 receiver module, or users can develop their own decoding logic.

4.1 Data Frame Structure
The data frame sent by the module follows the EV1527 encoding rule, consisting of a synchronization code, 20-bit address code and 4-bit key value code, with a basic unit time T≈35μs:

Synchronization code: 32T high level + 80T low level

Data bit "1": 3T high level + 1T low level

Data bit "0": 1T high level + 3T low level

The complete frame structure is as follows:

32*T
204T
44T

Synchronization code
20-bit address code (C0~C19)
4-bit key value code (D0~D3)

4.2 Usage Methods

Direct button connection: Connect one end of the button to the K0/K1/K2 pin of the module, and the other end to ground. Pressing the button will automatically send the corresponding encoded signal, no MCU participation required.

MCU control: The MCU pin can simulate the button level change to realize data transmission, suitable for scenarios requiring dynamic control.

Receiver decoding: After demodulation with the E160-RxMD2 receiver module, the MCU parses the 20-bit address code and 4-bit key value code to realize the corresponding control function.

Note: Since the module communication rate is 28kbps, it needs to be used with the E160-RxMD2 receiver module that supports this rate. High-speed receiver modules such as E160-RxMS1 are not applicable.

1. Typical Applications and Reference Circuits 5.1 3 Independent Buttons Application Circuit Suitable for simple remote control scenarios with less than 3 buttons, the circuit design is the simplest:

K0/K1/K2 pins are respectively connected to independent buttons, and the other end of the button is grounded

NC pin is connected in series with a 470Ω resistor and LED indicator for button status indication

The power supply uses a 3V button battery, with standby power consumption of only 1μA, and the battery life can reach more than 1 year

5.2 6 Combined Buttons Application Circuit
Through the matrix button design, 6 button functions are realized with 3 pins, suitable for multi-function remote controls:

K0+K1 combination realizes K3 function (key value 1000)

K0+K2 combination realizes K4 function (key value 0101)

K1+K2 combination realizes K5 function (key value 0110)

Supports 3 independent buttons and 3 combined buttons at the same time, meeting the needs of most consumer remote control applications

5.3 Typical Application Scenarios
The high cost-effectiveness and low power consumption features of the E160-TxF12S2 make it widely applicable to the following scenarios:

Small Home Appliance Remote Control: Wireless remote control for fans, lighting, bath heaters, humidifiers and other small home appliances

Toy Remote Control: Low-power remote control applications for remote control cars, remote control planes, electric toys, etc.

Access Control System Remote Control: Wireless remote controls for community access control, garage doors, electric rolling doors

Electric Bicycles: Anti-theft remote controls for electric bicycles and electric motorcycles

Smart Switches: Control terminals for wireless remote control switches and smart sockets

1. Frequently Asked Questions and Solutions 6.1 Unsatisfactory Transmission Range Possible Causes:

There are linear obstacles, same-band interference, or metal shielding near the antenna

Power supply voltage is lower than 3.3V, resulting in reduced transmit power

Poor matching between antenna and module, or poor antenna quality

Tested in environments with strong radio wave absorption such as near the ground or seaside

Solutions:

Elevate the antenna installation height, avoid obstacles and interference sources

Ensure the power supply voltage is ≥3.3V, use a regulated power supply

Replace a matched high-gain antenna, use an antenna extension cable when deployed inside a metal case

Test in an open environment, avoid using in strong absorption environments

6.2 Module Easy to Damage
Possible Causes:

Power supply voltage exceeds 3.6V, or the positive and negative poles of the power supply are reversed

No electrostatic protection during installation, causing chip breakdown

Operating environment humidity exceeds 90%, or temperature exceeds the industrial grade range

Solutions:

Add over-voltage and reverse polarity protection circuits, strictly control the power supply voltage between 1.8~3.6V

Implement electrostatic protection during installation and operation, ensure good module grounding

Avoid using in environments exceeding -40℃~+85℃ or high humidity

6.3 High Bit Error Rate
Possible Causes:

There is same-frequency signal interference nearby

Unstable power supply with excessive ripple

Antenna feeder is too long or of poor quality, resulting in signal attenuation

Solutions:

Replace modules of different frequency bands (switch between 315MHz/433MHz) to avoid interference frequency bands

Optimize power supply design, add filter capacitors to reduce power supply ripple

Shorten the antenna feeder length, use low-loss coaxial cable

1. Soldering and Mass Production Guide 7.1 Reflow Soldering Parameters The module supports lead-free reflow soldering, with the following soldering parameters:

Curve Feature
Leaded Soldering
Lead-free Soldering

Solder Paste Type
Sn63/Pb37
Sn96.5/Ag3/Cu0.5

Preheat Temperature Range
100℃~150℃
150℃~200℃

Preheat Time
60-120 sec
60-120 sec

Average Ramp-up Rate
≤3℃/sec
≤3℃/sec

Liquidous Temperature
183℃
217℃

Time Above Liquidous
60-90 sec
30-90 sec

Peak Temperature
220-235℃
230-250℃

Average Ramp-down Rate
≤6℃/sec
≤6℃/sec

Total Time from 25℃ to Peak
≤6 minutes
≤8 minutes

7.2 Mass Packaging Method
The modules are packaged in tape and reel, 1000pcs per reel, with packaging specifications:

Tape dimensions: width 44.5~48.5mm, thickness 2.9±0.1mm

Reel diameter: 330±0.2mm

Suitable for fully automatic SMT mounter production, improving mass production efficiency

1. Selection Reference and Supporting Solutions 8.1 Peer Product Comparison

Product Model
Transmit Power
Communication Range
Number of Buttons
Sleep Current
Package Size

E160-TxF12S2
13dBm
210m
6 (3 pins expanded)
1μA
20.4*13.3mm

E160-TxF20S2
20dBm
500m
6
2μA
22*15mm

Competitor Ordinary Transmitter Module
10dBm
100m
3
5μA
25*15mm

8.2 Recommended Supporting Receiver Modules

Receiver Module Model
Receive Sensitivity
Compatible Rate
Application Scenario

E160-RxMD2
-112dBm
2.4~48kbps
Best match with E160-TxF12S2, high sensitivity and low power consumption

E160-RxMS2
-108dBm
1~10kbps
Long-distance transmission scenarios, strong anti-interference capability

8.3 Recommended Antennas

Antenna Model
Type
Gain
Application Scenario

TX433-JZ-5
Spring Antenna
1.5dBi
Small remote controls, built-in installation

TX433-JK-10
Copper Rod Antenna
2.0dBi
Medium-distance transmission, external installation

TX433-XPH-300
Suction Cup Antenna
3.0dBi
Long-distance transmission, fixed equipment

About Ebyte
Chengdu Ebyte Electronic Technology Co., Ltd. is a national high-tech enterprise focusing on wireless communication applications. Its products cover the full range of wireless modules including LoRa, Bluetooth, Wi-Fi, Sub-1GHz, etc., which are widely used in consumer electronics, industrial IoT, smart home, smart agriculture and other fields. The company has more than 100 technical patents, and its products have passed international certifications such as FCC, CE and RoHS, and are exported to more than 160 countries and regions. It can provide customers with customized development and one-stop wireless communication solutions.

Official Website: https://www.cdebyte.com

Technical Support: [e-mail]

Sales Hotline: [phone]

Address: 2nd Floor, Building B2, 199 Xiqu Avenue, High-tech Zone, Chengdu, Sichuan, China