What relay is released after one electric pull-in and one electric pull-in?

My friend, the magnetic latching relay is also an automatic switch. Like other electromagnetic relays, it can automatically turn on and off the circuit. The difference is that the normally closed or normally open state of magnetic latching relay depends entirely on the action of permanent magnet steel, while the on-off state of magnetic is triggered by a pulse electric signal with a certain width. Action principle: The open and close state of magnetic latching relay contact is usually maintained by the magnetic force generated by permanent magnet steel. When the contacts of the relay need to be turned on or off (that is, when the load is turned on or off), the relay can complete the state transition of on and off in an instant only by exciting the coil with positive (negative) DC pulse voltage. The power loss at this time is generally less than1w. Generally, when the contact is in the holding state, the coil does not need to be energized, and the state of latching relay can be kept unchanged only by the magnetic force of permanent magnet steel. That is to say, after the relay coil is powered off, the armature of the relay can still maintain the state when the coil is powered on, and there are two stable States (one contact is off and the other contact is closed). Friend, there are many models, such as TQ N H-L2-2M-3V from Panasonic and GRT508A-60A from Wenzhou Gretel Electric Co., Ltd., you can choose according to your actual needs.