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Arlec PC399HA Plug

Arlec PC399HA Plug

Device Type: plug
Electrical Standard: au
Board: esp8266

Product Image

The Arlec PC399HA power plug is part of the Grid Connect ecosystem and is sold at Bunnings in Australia and New Zealand.

As at the time of writing, they can sometimes be flashed without disassembly or soldering using tuya-convert. Newer versions cannot yet be flashed without opening the device.

To flash the device manually the unit needs to be opened and then flashed over the UART connection. An example video on youtube shows how to wire this into a UART adaptor.

GPIO Pinout

PinFunction
GPIO03Button
GPIO04BL0937 CF
GPIO05BL0937 CF1
GPIO12BL0937 SEL
GPIO13Blue LED (Inverted: true)
GPIO14Relay

Getting it up and running

Tuya Convert

These switches are Tuya devices, so if you don't want to open them up to flash directly, you can use tuya-convert to initially get ESPHome onto them. After that, you can use ESPHome's OTA functionality to make any further changes.

  • Put the switch into "smartconfig" / "autoconfig" / pairing mode by holding any button for about 5 seconds.
  • The status LED blinks rapidly to confirm that it has entered pairing mode.

Basic Configuration

substitutions:
device_name: "arlec_PC399HA_1"
name: "ARLEC PC399HA 1"
esphome:
name: ${device_name}
comment: ${name}
friendly_name: ${name}
esp8266:
board: esp01_1m
# Enable logging
logger:
# Enable Home Assistant API
api:
encryption:
key: "api_password"
ota:
password: "ota_password"
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
ap:
captive_portal:
binary_sensor:
- platform: gpio
pin:
number: GPIO3
inverted: True
mode: INPUT_PULLUP
name: ${name} button
filters:
delayed_on_off: 100ms # Debouncing
on_press:
then:
- switch.toggle: relay
switch:
- platform: gpio
pin: GPIO14
name: "${name}"
id: relay
restore_mode: always on
icon: mdi:power-socket-au
on_turn_on:
then:
- output.turn_on: button_led
on_turn_off:
then:
- output.turn_off: button_led
output:
- platform: gpio
id: button_led
pin:
number: GPIO13
inverted: yes
sensor:
- platform: hlw8012
model: BL0937
sel_pin:
number: GPIO12
inverted: true
cf_pin: GPIO04
cf1_pin: GPIO05
voltage_divider: 1650 # You may need to adjust this to be accurate
current:
name: "${name} Current"
accuracy_decimals: 3
voltage:
name: "${name} Voltage"
accuracy_decimals: 2
power:
name: "${name} Power"
id: totalMediaWatts
energy:
name: "${name} Energy"
update_interval: 10s
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