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Gravity: EV1527 Digital Wireless Switch Module

SKU: TEL0142

The EV1527 Digital Wireless Switch Module is a versatile component designed for seamless integration into electronic projects, operating at a frequency of 433MHz and supporting low power consumption. This module offers four interfaces for digital signal input and output, making it ideal for efficient control applications. It boasts a compact circuit board size, with the transmitter and receiver designed to maintain reliable signal transmission even through walls, with minimal attenuation. The module operates on a voltage range of 3.3-5V DC, with the transmitter and receiver consuming minimal current in both working and standby modes. A key feature is its ability to pair and switch modes using a dedicated button on the receiver. The EV1527 module is tested with a transmitter connected to a 3.7V lithium battery and a receiver connected to an UNO controller, ensuring optimal performance at a consistent height of 0.5M above ground. This module supports a transmission distance of up to 15 meters in open office settings, with a slight reduction in range when walls are present. Overall, the EV1527 Digital Wireless Switch Module is a reliable and efficient solution for projects requiring wireless signal control and integration.

Front of Gravity wireless switch module with 433MHz RF receiver and LED indicator-DFRobot product sku:TEL0142 image.
  • Tech Specs

    • Specification

    Parameter Details
    Working voltage 3.3¡«5.0V DC
    Input signal digital
    Number of interfaces 4
    Working frequency 433Mhz
    Circuit board size transmitting end 47¡Á32mm, receiving end 37¡Á32mm
    Mounting hole size inner diameter 3.1mm/outer diameter 6mm
    Operating current Transmitter Receiver
    5V power supply, working 10mA 6mA
    5V power supply, standby <10uA 3mA
    3.3V power supply, working 8mA 5mA
    3.3V power supply, standby <10uA 3mA
    Status Transmission distance
    Office£¬ no walls 15M
    Office£¬ 1 walls 14~15M
    Office £¬2 walls 13~14M
    • Distance test description
      • The transmitter is connected to a 3.7V lithium battery
      • Receiver connects to UNO controller 5V power supply
      • Try to keep the transceiver module at the same height, about 0.5M above the ground
      • The antenna stays in the default position
      • There is no great attenuation after the signal passes through the wall, and the transmission distance is reduced by about 0.5M each time it passes through the wall

    Pinout

    Device Name Description
    Transmitter D0 ~ D3 The digital signal input terminal
    powers the external sensor
    the green pin receives the high-level transmit signal
    Transmitter G-D0 ~ G-D3 Digital signal input terminal
    After connecting to the controller, it can supply power to the transmitter, DC 3.3-5V
    receive high-level transmission signal
    Transmitter BAT IN External power input 3.3-5V
    Receiver D0 ~ D3 Digital signal output terminal
    the default low level, the received signal is high level
    Receiver Button Pairing/mode switching

    FAQ

    • Can it be used with other transmitters and receivers?
      Yes, but make sure that the encoding format and rate are the same,different devices D0-D3 may not correspond exactly. The encoding format of the transmitter is EV1527, and the transmission rate is less than 10K; the decoding format of the receiver is EV1527, and the decoding rate is 0~10K.
    • Reduce power: sleep mode, low TX, short duty cycle.

      For some passive sensors, such as button, Collision sensor, magnetic sensor, connect the sensor The red and green wires to the transmitter, disconnect the black wire, which can reduce power consumption

    • Receiver connected to controller, no TX signal but receives signal.
      The receiver receives the control of the code, burn the corresponding sample code or burn an empty code to solve the problem
    • Can the receiver directly control the relay?
      Yes, the positive and negative terminals of any one interface of the receiver is connected to the 3.3/5V power supply, other ports can be directly connected to the relay.

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