Scantronic (8136) - set/unset via a zone

Bit of progress, if I set the zone to KF rather than KM. Then completing the circuit on the zone now puts the alarm (Level A) into a kind of set mode, but the sounder maintains a steady tone, and it never completes the set.
 
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Typing my alarm code in during this process performs an unset..confusing!
 
These are from the 808 /816 manual ( non idis version ) may help you …..only problem I can see with this type of key switch setting is when it’s not turned off by this method it will be out of sync….
 

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ok, done using ESPHome, 2 relays, 2 inputs

Keyswitch on zone 13 (relay)
Normal alarm on zone 14 (relay)

OP3 configured to latch when alarm active
OP4 configured to latch when alarm set

I found a new document called Installation and Programming Guide for the 8136UK-50/75 which helped immensely, especially example 6 which is for keyswitches.

ESPHome configuration below:

esphome:
name: pico-alarm

esp32:
board: esp32dev
flash_size: 4MB

# Enable logging
logger:
baud_rate: 0 #disable logging over uart
level: VERBOSE

web_server:
port: 80

http_request:

ota:
password: ""

wifi:
....

ap:
....

captive_portal:

switch:
- platform: gpio
id: keyswitch
pin:
number: 32
name: "Keyswitch"

- platform: gpio
pin:
number: 33
name: "Zone"

binary_sensor:
- platform: gpio
pin:
number: 25
inverted: true
mode:
input: true
pullup: true
name: "Alarm Active"
device_class: safety

- platform: gpio
pin:
number: 26
inverted: true
mode:
input: true
pullup: true
name: "Alarm Set"
device_class: safety
 

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