Using time relaytype electronic drainage device emissions every 2 minutes: open a, an average of about 2 seconds leak compressed air every day, the leakage of time.
采用时间继电器式电子排水器排放：每2分钟开一次，平均约2秒泄露压缩空气，每天的泄露时间。
2
However, you can use a large variety of diodes here, my next choice would be a regular purpose 1N4001 or something and should be used if your relaytype can handle more then 1 amp.
The Dispatchers of a system will ensure the request is routed to a service instance of the right service type which will handle the request and relay back the result to the client.