Secure C1727 - Page 16

Label your wires
Pin
Label
Pin description
N
Neutral
Neutral
L
Live
Live
1
O 1
Hot water OFF (NC), channel 1
2
COM
Common
3
On 1
Hot water ON (NO), channel 1
4
On 2
Heating ON (NO), channel 2
If replacing, take a picture of your old thermostat
connections, label and re-wire as shown in
Secure Controls installer app.
N L
1
2
3 4
N L
1
2
3
4
Earth Earth
Backplate
Note: NC - Normally Closed, NO - Normally Open
16