Hongfa hf18fh power relays 5a 14 pin plug in 4 pole changeover hongfa hf18fha1204z1d a 120v ac 5a plug in power relays with 4 pole changeover contacts the relays have a 14 pin mounting configuration and feature silver alloy contacts and a lockable push to test button hongfa hf18fha1204z1d 4 pole 5a 120vac 14 pin plug in power relay