Gravity Digital Wireless Transmit Switch 433MHz Transmitter

The Gravity wireless transmitter from DFRobot transmits up to four digital signals via 433 MHz to the matching Gravity wireless receiver, for example to pass on a push button, a motion detector or an Arduino output without a cable. A HIGH signal on one of the inputs D0 to D3 appears on the same output of the receiver. Encoding is done with EV1527, without programming and without AT commands. In offices the connection reaches about 15 m according to DFRobot, each wall costs about 0.5 m.

Note: The connection cable can be converted to male pins with a Dupont cable M-M, so that it also fits an Arduino UNO.

Recommended Accessories:

• Gravity Digital Wireless Receive Switch 433MHz Receiver
• Dupont Cables M-M 10cm 20 Pieces

Features:

• Four digital inputs D0 to D3, as Gravity connectors (G-D0 to G-D3) and as pin headers
• Supply via a Gravity connector from the controller or via BAT IN with 3.3 to 5 V
• Standby below 10 µA, suitable for battery operation
• 15 button states, one transmitter to several receivers or several transmitters to one receiver
• Operating modes on the receiver: momentary, toggle (latching), self-locking and interlocking
• For passive sensors such as push buttons, connect only red and green and leave out black, this saves power (DFRobot FAQ)
• Examples for Arduino in the wiki, for example a wireless doorbell

Application Examples:

• Wireless doorbell
• Converting wired push buttons to wireless
• Simple remote control
• Sending sensor messages to an Arduino

Documentation:

• Wiki DFRobot TEL0140 with examples for Arduino
• Schematic (PDF)
• Dimensional drawing (PDF)

Technical Data:

• Manufacturer: DFRobot
• Manufacturer SKU: TEL0140
• Frequency: 433 MHz
• Encoding: EV1527, below 10 kbit/s
• Operating voltage: 3.3 to 5 V DC
• Current when transmitting: 10 mA (5 V), 8 mA (3.3 V)
• Standby: below 10 µA
• Inputs: 4 digital, HIGH triggers
• Range: about 15 m in offices
• Dimensions: 47 × 32 mm
• Mounting holes: Ø 3.1 mm inside, 6 mm outside

Scope of Delivery:

• 1× Gravity Digital Wireless Transmit Switch 433 MHz transmitter
• 1× Gravity digital sensor cable 3-pin