IntroductionAgainst 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 ContentsCore Product FeaturesDetailed Technical SpecificationsHardware Design and Pin DefinitionSoftware Development and Coding RulesTypical Applications and Reference CircuitsFrequently Asked Questions and SolutionsSoldering and Mass Production GuideSelection Reference and Supporting Solutions1. Core Product FeaturesThe 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 CategorySpecific ParametersModulation MethodOOK/ASK (Amplitude Shift Keying/On-Off Keying)Operating Frequency Band315MHz (E160-T3F12S2) / 433.92MHz (E160-T4F12S2)Transmit Power+13dBm (@3.3V power supply)Communication RangeUp to 210m in ideal environment (paired with E160-RxMD2 receiver module, 1.5dBi antenna, 2m height)Power Consumption PerformanceTransmit current 10mA, sleep current only 1μAEncoding FeaturesBuilt-in EV1527 standard encoding, factory-cured 20bits unique address code (million groups without repetition)Button Support3 independent input pins, expandable to 6 buttons through combinationReliability Design±4KV ESD electrostatic protection (±6KV for RF pin), industrial temperature range of -40℃~+85℃Power Supply FeaturesWide voltage 1.8V~3.6V, supports button battery power supplyDimensions20.4×13.3×2.5mm ultra-small size, stamp hole SMD packageEach 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.2. Detailed Technical Specifications2.1 RF ParametersRF ParameterParameter ValueRemarksOperating Frequency315MHz / 433.92MHzTwo models availableModulation MethodASK/OOKAmplitude shift keying modulationMaximum Transmit Power13±1.0dBmTypical value, @3.3V power supplyHarmonic Suppression>45dBc@433MHz, second harmonicTransmission Rate28kbpsFixed valueFrequency Offset±0.05MHz-Antenna Impedance50Ω-Reference Communication Range210mPaired with E160-RxMD2 receiver module, clear open environment2.2 Electrical ParametersElectrical ParameterMinimumTypicalMaximumRemarksOperating Voltage1.8V3.3V3.6V≥3.3V ensures maximum output power, exceeding 3.6V has burn-out riskCommunication Level1.8V3.3V3.6VConsistent with power supply voltageTransmit Current-10.0mA-Instantaneous power consumption @3.3V power supply, 433.92MHz, 13dBm transmissionSleep Current-1μA-Automatically enters sleep when no data is sentESD Protection-4KV+4KVHBM standard, ±6KV for RF pinOperating Temperature-40℃-+85℃Industrial-grade designOperating Humidity10%rh-90%rh-Storage Temperature-65℃-+150℃-2.3 Hardware ParametersHardware ParameterParameter ValueRemarksCrystal Frequency26.25MHz (315MHz version) / 26.2982MHz (433MHz version)Module Dimensions20.413.32.5mmLWHAntenna FormStamp hole-Communication InterfaceGPIO1.8~3.6V level, 3.3V recommended for reliabilityPackage FormSMD/stamp holePin pitch 2.54mmWeight3.65g-3. Hardware Design and Pin Definition3.1 Pin LayoutThe E160-TxF12S2 adopts a 9-pin SMD package. The core pin definitions are as follows:Pin NumberPin NameDirectionFunction Description1K0InputButton input pin, active low, at least 100ms duration, key value "0001"2K1InputButton input pin, active low, at least 100ms duration, key value "0010"3K2InputButton input pin, active low, at least 100ms duration, key value "0100"4NCOutputLED output pin, active low, outputs low when button is pressed, outputs high when released5VDDPowerDC 1.8~3.6V power input6GND-Power ground7GND-Power ground8GND-Power ground9ANTOutputAntenna pin, only transmits signals, no receiving functionCombined 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 NotesPower 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.4. Software Development and Coding RulesThe 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 StructureThe 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 levelData bit "1": 3T high level + 1T low levelData bit "0": 1T high level + 3T low levelThe complete frame structure is as follows:32T204T44TSynchronization code20-bit address code (C0~C19)4-bit key value code (D0~D3)4.2 Usage MethodsDirect 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.5. Typical Applications and Reference Circuits5.1 3 Independent Buttons Application CircuitSuitable 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 groundedNC pin is connected in series with a 470Ω resistor and LED indicator for button status indicationThe power supply uses a 3V button battery, with standby power consumption of only 1μA, and the battery life can reach more than 1 year5.2 6 Combined Buttons Application CircuitThrough 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 applications5.3 Typical Application ScenariosThe 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 appliancesToy 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 doorsElectric Bicycles: Anti-theft remote controls for electric bicycles and electric motorcyclesSmart Switches: Control terminals for wireless remote control switches and smart sockets6. Frequently Asked Questions and Solutions6.1 Unsatisfactory Transmission RangePossible Causes:There are linear obstacles, same-band interference, or metal shielding near the antennaPower supply voltage is lower than 3.3V, resulting in reduced transmit powerPoor matching between antenna and module, or poor antenna qualityTested in environments with strong radio wave absorption such as near the ground or seasideSolutions:Elevate the antenna installation height, avoid obstacles and interference sourcesEnsure the power supply voltage is ≥3.3V, use a regulated power supplyReplace a matched high-gain antenna, use an antenna extension cable when deployed inside a metal caseTest in an open environment, avoid using in strong absorption environments6.2 Module Easy to DamagePossible Causes:Power supply voltage exceeds 3.6V, or the positive and negative poles of the power supply are reversedNo electrostatic protection during installation, causing chip breakdownOperating environment humidity exceeds 90%, or temperature exceeds the industrial grade rangeSolutions:Add over-voltage and reverse polarity protection circuits, strictly control the power supply voltage between 1.8~3.6VImplement electrostatic protection during installation and operation, ensure good module groundingAvoid using in environments exceeding -40℃~+85℃ or high humidity6.3 High Bit Error RatePossible Causes:There is same-frequency signal interference nearbyUnstable power supply with excessive rippleAntenna feeder is too long or of poor quality, resulting in signal attenuationSolutions:Replace modules of different frequency bands (switch between 315MHz/433MHz) to avoid interference frequency bandsOptimize power supply design, add filter capacitors to reduce power supply rippleShorten the antenna feeder length, use low-loss coaxial cable7. Soldering and Mass Production Guide7.1 Reflow Soldering ParametersThe module supports lead-free reflow soldering, with the following soldering parameters:Curve FeatureLeaded SolderingLead-free SolderingSolder Paste TypeSn63/Pb37Sn96.5/Ag3/Cu0.5Preheat Temperature Range100℃~150℃150℃~200℃Preheat Time60-120 sec60-120 secAverage Ramp-up Rate≤3℃/sec≤3℃/secLiquidous Temperature183℃217℃Time Above Liquidous60-90 sec30-90 secPeak Temperature220-235℃230-250℃Average Ramp-down Rate≤6℃/sec≤6℃/secTotal Time from 25℃ to Peak≤6 minutes≤8 minutes7.2 Mass Packaging MethodThe modules are packaged in tape and reel, 1000pcs per reel, with packaging specifications:Tape dimensions: width 44.5~48.5mm, thickness 2.9±0.1mmReel diameter: 330±0.2mmSuitable for fully automatic SMT mounter production, improving mass production efficiency8. Selection Reference and Supporting Solutions8.1 Peer Product ComparisonProduct ModelTransmit PowerCommunication RangeNumber of ButtonsSleep CurrentPackage SizeE160-TxF12S213dBm210m6 (3 pins expanded)1μA20.413.3mmE160-TxF20S220dBm500m62μA2215mmCompetitor Ordinary Transmitter Module10dBm100m35μA2515mm8.2 Recommended Supporting Receiver ModulesReceiver Module ModelReceive SensitivityCompatible RateApplication ScenarioE160-RxMD2-112dBm2.4~48kbpsBest match with E160-TxF12S2, high sensitivity and low power consumptionE160-RxMS2-108dBm1~10kbpsLong-distance transmission scenarios, strong anti-interference capability8.3 Recommended AntennasAntenna ModelTypeGainApplication ScenarioTX433-JZ-5Spring Antenna1.5dBiSmall remote controls, built-in installationTX433-JK-10Copper Rod Antenna2.0dBiMedium-distance transmission, external installationTX433-XPH-300Suction Cup Antenna3.0dBiLong-distance transmission, fixed equipmentAbout EbyteChengdu 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.comTechnical Support: [email protected]Sales Hotline: +86-4000-330-990Address: 2nd Floor, Building B2, 199 Xiqu Avenue, High-tech Zone, Chengdu, Sichuan, China