A Sliding gate operator is a mechanical device used to open and close a gate.They can be programmed to open and close with a wireless transmitter or a manual device. Model: ASN 300A : 300 to 500 kg Foundation plate, wireless remote, wireless push button and mounting accessories+ photocell sensor. Model: ASN 370A : 600 to 800 kg Foundation plate, wireless remote, wireless push button and mounting accessories+ photocell sensor. Model: ASN 550A : 1000 to 1200 kg Foundation plate, wireless remote, wireless push button and mounting accessories+ photocell sensor. Model: ASN 770A : 1800 kg Foundation plate, wireless remote, wireless push button and mounting accessories+ photocell sensor.