It depends how and where you're measuring the current.
With all the doors and bonnet shut and with the alarm on, the current drain is 24 mA which is 0.024 Amps.
The best way to measure this is as follows.
1. disconnect the chassis cable from the -ve terminal of the car battery
2. connect one jump lead to the -ve terminal of the car battery and the other jump lead to the chassis cable
3. drape the jump leads over the plastic cover over the grill
4. shut the bonnet fully (obviously make sure that the cables do not squeeze the headlight)
5. connect the two jump leads together outside the car
6. with all the doors and bonnet shut, lock the car so that the alarm is set
7. with the meter set to measure current on its most sensitive setting, connect the meter onto the jump leads as shown (do not let the jump leads become disconnected or the alarm will go off, if you need to adjust the way you are making the connections, unset the alarm, open a car door, and go back to 5)
8. open the jump leads as shown (do not let the meter become out-of-circuit or the alarm will go off), you will now see the current drain (the reading in this picture is not with the doors shut and alarm on)
9. reconnect the jump leads (with meter still in-circuit) before you try to unlock the car i.e. connect as in 7 before you try to unlock the car. Then unlock the car and open the bonnet.
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