You only need a valid SIM card (not included!). Power on: Open the card cover and insert the SIM card in the direction indicated. 1 GF-07 car positione. Host status. Sound query around the product: dial the number of the card in the alarm locator directly, and after a few seconds, you can hear the sound around the alarm locator (the alarm locator itself will not emit any sound and bright light in the query).
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