The setting of working mode:1. Momentary Mode: pressing one time the learning key button on the receiver board ( Led indicator on receiver board signaling simultaneously ),then any of the remote button , signaling three times by remote's LED indicator informs about setting momentary mode successfully . 2. Toggle Mode: pressing two times the learning key button on the receiver board( Led indicator on receiver board signaling simultaneously ),then any of the remote button , signaling three times by remote's LED indicator informs about setting toggle mode successfully . 3. Latched Mode: pressing three times the learning key button on the receiver board ( Led indicator on receiver board signaling simultaneously ),then first remote button ,follow on second remote button , signaling three times by remote's LED indicator informs about setting latching mode successfully ( first button stands for on , second button stands for off ). 4. 2CH momentary + 2CH Toggle : pressing four times the