1. The compact size of optocoupler relays helps to achieve miniaturization and high density of equipment.

2. Optocoupler relays have a long service life. Due to their lack of contacts (=no mechanical life), the switching of contacts has no mechanical action, greatly extending the service life of the relay and reducing maintenance costs for end products.

3. Optocoupler relay can maintain stable on resistance for a long time, and the on resistance value does not depend on the number of switches, which can maintain low on resistance for a long time.

4. Optocoupler relays have extremely low power consumption during operation, and compared with mechanical relays and reed relays, they have extremely low power consumption, which can contribute to overall equipment energy conservation.

5. The optocoupler relay has no action sound, and compared with mechanical relays that have mechanical action sound, the optocoupler relay works silently.

6. Optocoupler relays have low interference with other devices, and mechanical action can cause varying degrees of interference with surrounding electronic devices. Optocoupler relays operate without contact, which can reduce their interference with the circuit.