Apollo DIP Switch Calculator for XP95 and Discovery Devices
Use this Apollo DIP switch calculator to convert an XP95 or Discovery address into the switch pattern for switches 1 to 7. Switch 8 is shown separately because it is not normally used for address setting.
Enter an address from 1 to 126 for Apollo XP95 or Discovery devices that use 7-bit DIL switch addressing. Switches 1–7 set the address; switch 8 is not an address bit.
Note: For XP95/Discovery, set switch 8 to 0 (OFF) unless the specific device manual states otherwise.
Many Apollo sounder and VAD bases support both individual and group addressing:
- Individual addresses: 1–111 (set using the main 7-bit DIL switch)
- Group addresses: 112–126 (configured using a separate 4-segment DIL switch on the device base)
| Group Address | 4-Segment DIL (Base) |
|---|---|
| 112 | 1111 |
| 113 | 0111 |
| 114 | 1011 |
| 115 | 0011 |
| 116 | 1101 |
| 117 | 0101 |
| 118 | 1001 |
| 119 | 0001 |
| 120 | 1110 |
| 121 | 0110 |
| 122 | 1010 |
| 123 | 0010 |
| 124 | 1100 |
| 125 | 0100 |
| 126 | 1000 |
Important: These 4-segment group-address settings apply only to compatible Apollo sounder/VAD bases and devices that support group mode. A 0000 group switch setting disables group mode on supported devices. Always confirm the exact device manual before installation.
How to use this calculator
- Enter the device address from the fire alarm panel schedule.
- Set switches 1 to 7 to match the ON/OFF positions shown.
- Leave switch 8 OFF unless the device manual says otherwise.
- Copy or print the switch settings before setting the device on site.
Frequently Asked Questions
How do I set the address on an Apollo XP95 or Discovery device?
Use the 7-bit DIL switch on compatible devices. Enter the required address from 1 to 126, then set switches 1 to 7 to match the ON/OFF pattern shown.
What is switch 8 used for on XP95/Discovery devices?
Switch 8 is not used for addressing on XP95/Discovery. It may control other device-specific functions such as volume settings on sounders. Keep it OFF unless your device manual specifies otherwise.
What are group addresses (112–126) used for?
Group addresses allow compatible sounder or VAD bases to be controlled together. They are set with a separate 4-segment DIL switch on supported devices. For group mode, use addresses 112–126 and keep the device's individual address in the range required by the product manual.
Can I use address 0 or addresses above 126?
No. Apollo XP95/Discovery devices support addresses 1–126 only. Address 0 is invalid, and addresses above 126 exceed the 7-bit addressing range.
How is the binary conversion calculated?
The address is converted to 7-bit binary with the least significant bit (LSB) on switch 1. For example, address 5 = binary 0000101, so switches 1 and 3 are ON, all others OFF.
Does this work for manual call points and detectors?
Use this calculator for Apollo devices that use 7-bit DIL switch addressing. Some Apollo detectors use XPERT address cards instead of DIP switches, so check the specific product manual before setting the address.