GSM relay kit PGK 10
The kit contains all the necessary components to build a GSM relay
mm. programmed processor, integrated circuits, circuit boards, audio transformer, four pieces of relays, resistors, capacitors, wiring diagram and installation instructions
Quick Instructions eg 3510 for
The headset cord attached.
Tones / key tone / Level3.
Settings / Accessory Settings / Handsfree (no ear-cup) / Default profile / General / Change / Auto Answer.
In addition, during the call volume to maximum.
It needs a following phone
Nokia: 1100, 1101, 1110, 1112, 1600, 2100, 2300, 2310, 2600, 2610, 2626, 2650, 2652, 3210, 3310, 3330, 3410, 3510, 3510i, 3650, 3660, 5210, 6030, 6060, 6510, 6600, 7280, 7380, 7390, 7650, 8210, 8310, 8800, 8800 Sirocco, 8850, 8890, 8910, 8910i, N-Gage, N-Gage QD
Does not include: HF-cable, case, power supply.
more information
http://www.probyte.fi/info/gsmrelay.html

Wallas heater connection diagrams
http://remotesmart.wikidot.com/wallas-laemmittimen-kytketae-gsmreleellae
http://www.probyte.fi/info/gsmrelay.html

Users manual: http://www.probyte.f/info/GSMrelay_Command_List.pdf