Compare the Apollo Gate Opener 1600 & the Apollo Gate Opener 1650 to the new Apollo Gate Opener 1650-1K
| Option | Model 1600 636 |
Model 1650ETL 836 | Model 1650ETL-1k |
| Auto Reverse Sensitivity | X | X | X |
| Auto Reverse Sensitivity - Adjustable | X | X | X |
| Auto Reverse Sensitivity - Self-Adjusting | X | X | |
| Auto Close Delay - Adjustable | X | X | X |
| Dual Gate Delay - Adjustable | X | X | |
| Emergency Bypass | X | X | X |
| Time to Close | X | X | X |
| Timer to Close Option | X | X | X |
| Slave Disable | X | X | X |
| 3 Button Station Enable | X | X | X |
| Adjustable Lock Type | X | X | |
| Coast Enable | X | X | |
| Free Exit Option | X | X | |
| Learn Mode | X | X | |
| Intelligent Actuator Enable | X | X | |
| Microprocessor | X | X | |
| Soft Start | X | X | |
| Soft Stop | X | X | |
| Computer Connection | X | X | |
| Gatelink Software Option | X | X | |
| Delay for Siren, etc | X | X | |
| 12V Fuse Protected Power Outputs For: | |||
| Radio Receivers | X | X | X |
| Keypads | X | X | X |
| Misc Options | X | X | X |
| Peripheral Inputs: | |||
| Free Exit | X | X | X |
| Safety Loop | X | X | X |
| Shadow Loop | X | X | X |
| Firebox | X | X | |
| Monitor Lights | X | X | |
| Lock | X | X | |
| Siren | X | X | |
| Strobe | X | X | |
| Edge | X | X | X |
| 3 Button Station | X | X | X |
| Telephone Entry | X | X | X |
| Photoeye | X | X | X |
| Advanced 1050 Circuit Board | |||
| Plug In Receiver | X | ||
| Programmable Connections to Accessories | X | ||
| Built in Solar Regulator | X | ||
| Integrated 10 Day Timer | X | ||
| Protection Against Electric Shocks | X | ||
| Master/Slave Management | X | ||
| Innovative Obstacle Detection System | X | ||
| Smart Battery Charging Management | X | ||
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