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DETA Grid Connect Smart Switch (Single 6911HA / Double 6912HA / Triple 6903HA / Quad 6904HA)

DETA Grid Connect Smart Switch (Single 6911HA / Double 6912HA / Triple 6903HA / Quad 6904HA)

Device Type: switch
Electrical Standard: au
Board: bk72xx

General Notes

The DETA Smart Single Switch (6911HA) and Smart Double Switch (6912HA) are made by Arlec as part of the Grid Connect ecosystem, and are sold at Bunnings in Australia and New Zealand.

Series 1

Series 1 models could be OTA flashed using using tuya-convert.

Series 2

Recently purchased devices are using the Beken BK7231T microcontroller and can be OTA flashed using using Cloudcutter.

Triple 6903HA and Quad 6904HA The pin outs on the 3 & 4 gang switches are different to the 1 and 2 gang switches. Some 4 gang switches are on random Tuya firmware 1.1.5 and may need to use the “Lonsonho” brand “X804A 4 Gang Smart Wifi Switch” option in Cloudcutter, otherwise use the Deta single gang switch.

Getting it up and running

Cloudcutter

Cloudcutter is a tool designed to simplify the process of flashing Tuya-based devices. It allows you to bypass the need for physically opening the device and swapping out chips. By leveraging the cloud APIs, Cloudcutter enables you to flash the firmware remotely, making it a convenient and less intrusive option. Follow the instructions on the Cloudcutter GitHub repository to use this method for flashing your device.

Disassembly

If you can't or don't wish to use Cloudcutter, you can flash directly to the outlet with USB to serial adapter.

Overview

This guide covers the DETA Smart Switches, including the Single (6911HA) and Double (6912HA), which are part of the Grid Connect ecosystem. These switches are available at Bunnings stores in Australia and New Zealand.

Series Information

Series 1 - Flashing

  • Flashing Method: OTA via tuya-convert

Series 2 - Flashing

  • Microcontroller: Beken BK7231T
  • Flashing Method: OTA via Cloudcutter

Note: The Triple 6903HA and Quad 6904HA models have different pinouts compared to the 1 and 2 gang switches.

Setup Guide

Using Cloudcutter

Cloudcutter is a tool designed to simplify the flashing process. Follow the official guide for instructions.

Manual Flashing

If you prefer to flash manually, you'll need a USB to serial adapter. Follow the disassembly steps below:

  1. Remove the front plastic face.
  2. Unscrew the two exposed screws.
  3. Remove the clear panel and the small PCB underneath.

Tip: You can convert these switches to ESPHome by replacing the WB3S chip with an ESP-12E or ESP-12F chip and adding a 10k pull-down resistor on GPIO15.

GPIO Pinouts

Tuya-Based Models

PinFunction
GPIO4Status LED (inverted)
GPIO12Button, Bottom
GPIO13Relay, Top (includes LED)
GPIO14Relay, Bottom (includes LED)
GPIO16Button, Top

Triple 6903HA

PinFunction
GPIO16Button, Top
GPIO04Button, Middle
GPIO03Button, Bottom
GPIO05Relay, Top (includes LED)
GPIO14Relay, Middle (includes LED)
GPIO12Relay, Bottom (includes LED)
GPIO0Status LED (inverted)

BK72XX-Based Models

PinFunction
P6Relay, Left (includes LED)
P9Status LED (inverted)
P14Button, Left
P24Button, Right
P26Relay, Right (includes LED)

Note: Each relay shares a pin with its associated LED.

Advanced Modifications

To gain individual control of button LEDs, remove specific diodes and solder a wire from the cathode side of the diode pad to a spare GPIO pin. See this example.

Configuration Examples

1 & 2 Gang Configuration for the BK72XX configurations

substitutions:
devicename: "deta-double-gang"
friendlyname: Deta Double Gang Switch
friendlyname_left: Deta Double Gang - Left
friendlyname_right: Deta Double Gang - Right
deviceid: deta_double_gang
deviceicon: "mdi:light-recessed"
devicemodel: Deta Grid Connect Double Gang 6912HAMBK (Matte Black)
#################################
esphome:
name: ${devicename}
bk72xx:
board: generic-bk7231t-qfn32-tuya
packages:
device_base: !include { file: common/device_base.yaml, vars: { friendlyname : 'Deta Double Gang Switch'} }
#################################
## ---------------- ##
## Status LED ##
## ---------------- ##
status_led:
pin:
number: P9
inverted: true
## ---------------- ##
## Relays ##
## ---------------- ##
output:
# Left Relay
- platform: gpio
id: relay_left
pin: P6
# Right Relay
- platform: gpio
id: relay_right
pin: P26
## ------------ ##
## Lights ##
## ------------ ##
light:
# Left Light
- platform: binary
name: ${friendlyname_left}
icon: ${deviceicon}
output: relay_left
id: light_left
# Right Light
- platform: binary
name: ${friendlyname_right}
icon: ${deviceicon}
output: relay_right
id: light_right
internal: True
## ----------------- ##
## Buttons ##
## ----------------- ##
binary_sensor:
# Left Button
- platform: gpio
id: button_left
pin:
number: P14
inverted: true
mode: INPUT_PULLUP
on_press:
then:
- light.toggle: light_left
internal: True
# Right Button
- platform: gpio
id: button_right
pin:
number: P24
inverted: true
mode: INPUT_PULLUP
on_press:
then:
- light.toggle: light_right
internal: True

3 Gang Configuration for BK72XX (Series 2)

substitutions:
devicename: "deta-triple-gang-switch"
friendlyname: Deta Triple Gang Switch
friendlyname_1: Light 1
friendlyname_2: Light 2
friendlyname_3: Light 3
deviceid: deta_triple_gang
deviceicon: "mdi:light-recessed"
devicemodel: Deta Grid Connect Triple Gang 6903HA Series 2
#################################
esphome:
name: ${devicename}
bk72xx:
board: generic-bk7231t-qfn32-tuya
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
ap:
ssid: "ESPHOME"
password: "123456"
#################################
logger:
web_server:
captive_portal:
api:
ota:
sensor:
- platform: wifi_signal
name: ${friendlyname} Wifi Signal Strength
update_interval: 60s
- platform: uptime
name: ${friendlyname} Uptime
text_sensor:
- platform: wifi_info
ip_address:
name: ${friendlyname} IP
ssid:
name: ${friendlyname} SSID
bssid:
name: ${friendlyname} BSSID
mac_address:
name: ${friendlyname} Mac
## ---------------- ##
## Status LED ##
## ---------------- ##
status_led:
pin:
number: P1
inverted: true
## ---------------- ##
## Relays ##
## ---------------- ##
output:
# Relay 1
- platform: gpio
id: relay_1
pin: P8
# Relay 2
- platform: gpio
id: relay_2
pin: P26
# Relay 3
- platform: gpio
id: relay_3
pin: P24
## ------------ ##
## Lights ##
## ------------ ##
light:
# Light 1
- platform: binary
name: ${friendlyname_1}
icon: ${deviceicon}
output: relay_1
id: light_1
# Light 2
- platform: binary
name: ${friendlyname_2}
icon: ${deviceicon}
output: relay_2
id: light_2
# Light 3
- platform: binary
name: ${friendlyname_3}
icon: ${deviceicon}
output: relay_3
id: light_3
## ----------------- ##
## Buttons ##
## ----------------- ##
binary_sensor:
# Button 1
- platform: gpio
id: button_1
pin:
number: P14
inverted: true
mode: INPUT_PULLUP
on_press:
then:
- light.toggle: light_1
internal: True
# Button 2
- platform: gpio
id: button_2
pin:
number: P9
inverted: true
mode: INPUT_PULLUP
on_press:
then:
- light.toggle: light_2
internal: True
# Button 3
- platform: gpio
id: button_3
pin:
number: P10
inverted: true
mode: INPUT_PULLUP
on_press:
then:
- light.toggle: light_3
internal: True

3 Gang Configuration for ESP

substitutions:
device_name: deta3gangswitch
friendly_name: "3 Gang Switch"
device_ip: 192.168.0.x
#################################
esphome:
platform: ESP8266
board: esp01_1m
name: ${device_name}
esp8266_restore_from_flash: true
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
manual_ip:
static_ip: ${device_ip}
gateway: 192.168.0.1
subnet: 255.255.255.0
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "ESPHOME"
password: "12345678"
api:
encryption:
key: !secret api_encryption_key
ota:
password: !secret ota_password
logger:
# The web_server & sensor components can be removed without affecting core functionaility.
web_server:
port: 80
sensor:
- platform: wifi_signal
name: ${device_name} Wifi Signal Strength
update_interval: 60s
- platform: uptime
name: ${device_name} Uptime
#################################
status_led:
pin:
number: GPIO0
inverted: True
output:
# 1st button
- platform: gpio
pin: GPIO5
id: relay1
# 2nd button
- platform: gpio
pin: GPIO14
id: relay2
# 3rd button
- platform: gpio
pin: GPIO12
id: relay3
light:
# 1st button
- platform: binary
name: "${friendly_name} 1st"
output: relay1
id: light1
# 2nd button
- platform: binary
name: "${friendly_name} 2nd"
output: relay2
id: light2
# 3rd button
- platform: binary
name: "${friendly_name} 3rd"
output: relay3
id: light3
# Buttons
binary_sensor:
# 1st button
- platform: gpio
pin:
number: GPIO16
mode: INPUT
inverted: True
name: "${friendly_name} 1st Button"
#toggle relay on push
on_press:
- light.toggle: light1
# 2nd button
- platform: gpio
pin:
number: GPIO4
mode: INPUT_PULLUP
inverted: True
name: "${friendly_name} 2nd Button"
#toggle relay on push
on_press:
- light.toggle: light2
# 3rd button
- platform: gpio
pin:
number: GPIO3
mode: INPUT_PULLUP
inverted: True
name: "${friendly_name} 3rd Button"
#toggle relay on push
on_press:
- light.toggle: light3
switch:
- platform: restart
name: "${friendly_name} REBOOT"

4 Gang Configuration for BK72XX (Series 2)

substitutions:
devicename: "deta-quad-gang-switch"
friendlyname: Deta Quad Gang Switch
friendlyname_1: Light 1
friendlyname_2: Light 2
friendlyname_3: Light 3
friendlyname_4: Light 4
deviceid: deta_quad_gang
deviceicon: "mdi:light-recessed"
devicemodel: Deta Grid Connect Quad Gang 6904HA Series 2
#################################
esphome:
name: ${devicename}
bk72xx:
board: generic-bk7231t-qfn32-tuya
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
ap:
ssid: "ESPHOME"
password: "123456"
#################################
logger:
web_server:
captive_portal:
api:
ota:
sensor:
- platform: wifi_signal
name: ${friendlyname} Wifi Signal Strength
update_interval: 60s
- platform: uptime
name: ${friendlyname} Uptime
text_sensor:
- platform: wifi_info
ip_address:
name: ${friendlyname} IP
ssid:
name: ${friendlyname} SSID
bssid:
name: ${friendlyname} BSSID
mac_address:
name: ${friendlyname} Mac
## ---------------- ##
## Status LED ##
## ---------------- ##
status_led:
pin:
number: P1
inverted: true
## ---------------- ##
## Relays ##
## ---------------- ##
output:
# Relay 1
- platform: gpio
id: relay_1
pin: P8
# Relay 2
- platform: gpio
id: relay_2
pin: P26
# Relay 3
- platform: gpio
id: relay_3
pin: P7
# Relay 4
- platform: gpio
id: relay_4
pin: P24
## ------------ ##
## Lights ##
## ------------ ##
light:
# Light 1
- platform: binary
name: ${friendlyname_1}
icon: ${deviceicon}
output: relay_1
id: light_1
# Light 2
- platform: binary
name: ${friendlyname_2}
icon: ${deviceicon}
output: relay_2
id: light_2
# Light 3
- platform: binary
name: ${friendlyname_3}
icon: ${deviceicon}
output: relay_3
id: light_3
# Light 4
- platform: binary
name: ${friendlyname_4}
icon: ${deviceicon}
output: relay_4
id: light_4
## ----------------- ##
## Buttons ##
## ----------------- ##
binary_sensor:
# Button 1
- platform: gpio
id: button_1
pin:
number: P14
inverted: true
mode: INPUT_PULLUP
on_press:
then:
- light.toggle: light_1
internal: True
# Button 2
- platform: gpio
id: button_2
pin:
number: P9
inverted: true
mode: INPUT_PULLUP
on_press:
then:
- light.toggle: light_2
internal: True
# Button 3
- platform: gpio
id: button_3
pin:
number: P6
inverted: true
mode: INPUT_PULLUP
on_press:
then:
- light.toggle: light_3
internal: True
# Button 4
- platform: gpio
id: button_4
pin:
number: P10
inverted: true
mode: INPUT_PULLUP
on_press:
then:
- light.toggle: light_4
internal: True

4 Gang Configuration for ESP

Note: Not updated for BK72XX.

substitutions:
device_name: deta4gangswitch
friendly_name: "4 Gang Switch"
device_ip: 192.168.0.x
#################################
esphome:
platform: ESP8266
board: esp01_1m
name: ${device_name}
esp8266_restore_from_flash: true
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
manual_ip:
static_ip: ${device_ip}
gateway: 192.168.0.1
subnet: 255.255.255.0
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "ESPHOME"
password: "12345678"
api:
encryption:
key: !secret api_encryption_key
ota:
password: !secret ota_password
logger:
# The web_server & sensor components can be removed without affecting core functionaility.
web_server:
port: 80
sensor:
- platform: wifi_signal
name: ${device_name} Wifi Signal Strength
update_interval: 60s
- platform: uptime
name: ${device_name} Uptime
#################################
status_led:
pin:
number: GPIO0
inverted: True
output:
# 1st button
- platform: gpio
pin: GPIO5
id: relay1
# 2nd button
- platform: gpio
pin: GPIO14
id: relay2
# 3rd button
- platform: gpio
pin: GPIO12
id: relay3
# 4th button
- platform: gpio
pin: GPIO15
id: relay4
light:
# 1st button
- platform: binary
name: "${friendly_name} 1st"
output: relay1
id: light1
# 2nd button
- platform: binary
name: "${friendly_name} 2nd"
output: relay2
id: light2
# 3rd button
- platform: binary
name: "${friendly_name} 3rd"
output: relay3
id: light3
# 4th button
- platform: binary
name: "${friendly_name} 4th"
output: relay4
id: light4
# Buttons
binary_sensor:
# 1st button
- platform: gpio
pin:
number: GPIO16
mode: INPUT
inverted: True
name: "${friendly_name} 1st Button"
#toggle relay on push
on_press:
- light.toggle: light1
# 2nd button
- platform: gpio
pin:
number: GPIO4
mode: INPUT_PULLUP
inverted: True
name: "${friendly_name} 2nd Button"
#toggle relay on push
on_press:
- light.toggle: light2
# 3rd button
- platform: gpio
pin:
number: GPIO3
mode: INPUT_PULLUP
inverted: True
name: "${friendly_name} 3rd Button"
#toggle relay on push
on_press:
- light.toggle: light3
# 4th button
- platform: gpio
pin:
number: GPIO13
mode: INPUT_PULLUP
inverted: True
name: "${friendly_name} 4th Button"
#toggle relay on push
on_press:
- light.toggle: light4
switch:
- platform: restart
name: "${friendly_name} REBOOT"
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