Room Thermostat - Quick Wiring Question

[bigalxyz]

Using a cheap old skool Eberle manual thermostat for a few days (long story). My old broken thermostat had:
* red into "L"
* blue into "N"
* yellow into "L1" (switched live?)

Does anyone know where red/blue/yellow should go in the new thermostat please? (photo of wiring diagram below but I'm not sure what N N 1 2 means here.

Thank you.

 

[AndyPRK]

1 live
2 switched live
N N

 

[bigalxyz]

IT WORKS! Thank you. Sending a virtual pint. Would send a real one if I could.