Elro HE (300 Series)¶

Feature	Support
Sending
Receiving
Config

Supported Brands

Brand	Protocol
Elro 300 Series	elro_300_switch

Sender Arguments

-s --systemcode=systemcode     control a device with this systemcode
-u --unitcode=unitcode         control a device with this unitcode
-t --on                        send an on signal
-f --off                       send an off signal
-a --all                       trigger group switching

Config

{
  "devices": {
    "dimmer": {
      "protocol": [ "elro_300_switch" ],
      "id": [{
        "systemcode": 123456,
        "unitcode": 0
      }],
      "state": "off"
    }
  },
  "gui": {
    "Lamp": {
      "name": "TV Backlit",
      "group": [ "Living" ],
      "media": [ "all" ]
    }
  }
}

Option	Value
systemcode	0 - 4294967295
unitcode	0 - 99
state	on / off

Optional Settings

Device Settings

Setting	Default	Format	Description
all	1	1 or 0	If specified this will trigger the group function of the advanced remotes and trigger all registered devices for the given Systemcode

GUI Settings

Setting	Default	Format	Description
readonly	1	1 or 0	Disable controlling this device from the GUIs
confirm	1	1 or 0	Ask for confirmation when switching device

Note

The group button appears to be sending the unitcode of I-1 (First band, first unit) no matter to which band the remote is currently set.

Protocol

This protocol sends 116 pulses like this

302 1208 302 1208 302 302 302 302 302 302 302 1208 302 1208 302 1208 302 1208 302 302 302 302 302 1208 302 302 302 1208 302 1208 302 1208 302 1208 302 302 302 302 302 1208 302 302 302 1208 302 1208 302 302 302 302 302 1208 302 302 302 1208 302 1208 302 1208 302 1208 302 302 302 302 302 1208 302 1208 302 302 302 1208 302 1208 302 302 302 302 302 1208 302 302 302 1208 302 1208 302 302 302 1208 302 1208 302 302 302 1208 302 302 302 1208 302 302 302 302 302 1208 302 1208 302 1208 302 302 302 10268

These pulses are separated into groups of 2:

There are several easily identifiable facts here:

320 960 320 960
320 960 960 320

The baseline is at 302
The high Pulse is basline * 4 = 1208
The last 2-pulse sequence is special, it’s the footer of the message

Using a translation pattern of 302 1208 → 1 and 302 302 → 0 we translate this sequence into the following pattern

Testing and some outside info reveals the following sections:

So this code represents:

SystemCode: 3165844325
UnitCode: 28
State: Off
UnitCode: NotSet

The protocol filters out false positives by checking if:

Every 1st pulse in groups of 2 is a low pulse
The last two pulses are 302 and 10268 (fixed footer)

This is the readout from the writer’s reference HE300 remote

Band	Code	UnitCode	GroupA	GroupB
I	1	56	13	2
I	2	52	13	2
I	3	44	13	2
I	4	28	13	2
II	1	50	13	2
II	2	42	13	2
II	3	26	13	2
II	4	38	13	2
III	1	22	13	2
III	2	14	13	2
III	3	49	13	2
III	4	41	13	2
IV	1	25	13	2
IV	2	37	13	2
IV	3	21	13	2
IV	4	13	13	2

This is translated:

1-1 11000111100 10111100101100101111001101100101 1011 10 01 000111 1
1-2 11000111100 10111100101100101111001101100101 1011 10 01 001011 1
1-3 11000111100 10111100101100101111001101100101 1011 10 01 001101 1
1-4 11000111100 10111100101100101111001101100101 1011 10 01 001110 1
2-1 11000111100 10111100101100101111001101100101 1011 10 01 010011 1
2-2 11000111100 10111100101100101111001101100101 1011 10 01 010101 1
2-3 11000111100 10111100101100101111001101100101 1011 10 01 010110 1
2-4 11000111100 10111100101100101111001101100101 1011 10 01 011001 1
3-1 11000111100 10111100101100101111001101100101 1011 10 01 011010 1
3-2 11000111100 10111100101100101111001101100101 1011 10 01 011100 1
3-3 11000111100 10111100101100101111001101100101 1011 10 01 100011 1
3-4 11000111100 10111100101100101111001101100101 1011 10 01 100101 1
4-1 11000111100 10111100101100101111001101100101 1011 10 01 100110 1
4-2 11000111100 10111100101100101111001101100101 1011 10 01 101001 1
4-3 11000111100 10111100101100101111001101100101 1011 10 01 101010 1
4-4 11000111100 10111100101100101111001101100101 1011 10 01 101100 1

G1  11000111100 10111100101100101111001101100101 1100 10 11 000111 1
G2  11000111100 10111100101100101111001101100101 1100 10 11 000111 1
G3  11000111100 10111100101100101111001101100101 1100 10 11 000111 1
G4  11000111100 10111100101100101111001101100101 1100 10 11 000111 1

Table Of Contents

Elro HE (300 Series)¶