This video shows how a W181/G18 alarm system pairs with SJ1 Solar Wireless Siren.
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Simple steps:
1. Make the SJ1 siren into pair mode;
2. Trigger the alarm system, and let it send the wireless signal;
3. SJ1 siren receives the wireless signal, it will keep remembering;
4. Let SJ1 siren out of pair mode.

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