a TX Module with version string of 3.1.2 will sync and work with a Receiver with firmware version 3.0.1 A C in the top-right corner should be visible indicating TX module and Receiver are connected and Communicating. a Receiver with version string of 3.1.2 will sync and work with a TX Module with firmware version 3.0.1

The new range of programmers hold a 3-year guarantee for consumer and installer peace of mind and are focused on value, quality and simplicity, offering an economical and durable solution for households.

If the button is being pressed or pinched, remove the cause of the pressing or pinching. Heatshrink can sometimes press a button on the receiver. If there is no other Full UART, you can try wiring a Pull-up Resistor: Connect a Resistor (300 Ohm to 1k Ohm value; a lower value is more effective) between this UART's RX pad and either a 5v or 3.3v pad as shown below: The ESi Controls 2 Channel Programmer offers flexibility and reliability for use in any domestic heating and hot water installations. The ES2247B is a twin channel multi purpose programmer, designed for separate control of your heating and stored hot water. The heating and hot water programmes are independent of each other, giving you the opportunity to operate the system in the most energy efficient and cost effective manner. Binding can be done with either a hard-coded unique Binding Phrase or in a more traditional way where you put the receiver and transmitter into bind mode, and they link up. If you are using any of the Digital FPV systems like the DJI FPV Air Unit, Caddx Vista or DJI O3 Air Unit, and you wired or connected all six wires to your Flight Controller, you will need to remove the SBUS/DJI HDL wire.

However you say "Turned the thermostat right down but heating stayed on." which does not seem to point to the programmer. The new range of programmers hold a 3 year guarantee for consumer and installer peace of mind and are focused on value, quality and simplicity, offering an economical and durable solution for households.

Delivery Policy

SPI-based Receivers on Betaflight 4.4.0 and newer will only sync or bind with ExpressLRS 3.x firmware Disconnect the RX and TX wires of the Receiver from the Flight Controller. Reconnect power to the drone or aircraft. Observe the LED on the Receiver once again. Using the ExpressLRS Lua Script, look for a C in the top-right corner of the screen which indicates TX module and Receiver are Connected and Communicating.

Power up your transmitter/radio and use the [BIND] button on the ExpressLRS Lua script, which sends out a binding pulse. The Popup will briefly show up and then disappear.

ESi 2 Channel Multi-Purpose Programmer

a TX Module with version string of 3.2.0 will NOT sync or bind with a Receiver with firmware version 2.4.0 If you'll be updating or reflashing your ExpressLRS firmware into your device anyway, using a Binding Phrase is a no-brainer. The ES2247B is a two channel multi purpose programmer with the flexibility of two or three on/off timings per day and can be configured for 7 day, 5/2 day or 24 hour operation for independent channels (all within the one unit), allowing one product to suit all installations alleviating any potential of incorrect selection. Records the default button state of the corresponding category & the status of CCPA. It works only in coordination with the primary cookie. A Receiver flashed or set with a Binding Phrase WILL NOT initiate Manual Binding mode, however many times you try the procedure below. You must first reflash the receiver with the Binding Phrase field disabled and/or unset. Why would you not use a bind phrase though if you're already having to flash the RX anyway?