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Gravity: EV1527 Digital Wireless Switch Module

SKU: TEL0140

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 components for signal transmission.-DFRobot product sku:TEL0140 image.

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    • 1. Transmitter Operating Instructions

    This article provides detailed instructions on the power supply functionalities of transmitters, emphasizing safe usage of D0 to D3 pin headers and avoiding power input misuse, ensuring optimal module operation.

    2. Receiver Configuration Guide

    This guide offers step-by-step instructions for configuring a receiver, including pairing with transmitters and switching between different operational modes such as inching, latching, self-locking, and interlocking. It also explains how to clear pairings and manage transmitter codes effectively.

    3. Usage Example for Arduino-Wireless Doorbell Simulation

    This article presents a practical guide for simulating a wireless doorbell using Arduino, detailing the hardware setup, connection instructions, and sample code to effectively demonstrate RF signal transmission and sensor interaction.

    4. Usage Example for Arduino-Controller-Controlled Signal Transmission

    5. Usage Example for Arduino-Jumper-Triggered Signal Transmission

    This article offers a comprehensive guide on using Arduino for jumper-triggered signal transmission, detailing the necessary hardware and software, connection setup, sample code, and the expected results when employing wireless switches for efficient signal communication.

    6. Usage Example for Arduino-Multi-State Signal Trigger

    Reference

    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 47×32mm, receiving end 37×32mm
    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

    • The receiver is connected to the controller, the transmitter does not transmit signal but the receiver receives the signal
      The receiver receives the control of the code, burn the corresponding sample code or burn an empty code to solve the problem
    • When using a battery to connect the transmitter and sensor, how to reduce the power consumption as much as possible
      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

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