Gate magnets have a very high holding power and are suitable for outdoor area. They are especially used in bigger doors and gates. Surface mounting.

MAG 6500 flat electric magnets are most sutiable for locking doors and gates outdoors.
Suitable for outdoor use, water resistant. IP 65.
Surface mounting version.
Hall sensor.
With counter plate.

6500N - 663kg holding power.

Fail unlocked operation. Locked under voltage, opens without it.