---
summary: Manual of the RB-8 relay board (excerpt): relays, clock backup, stored schedules
source_url: https://example.invalid/rb8-manual
retrieved: 2026-02-28
kind: manual
sha256: 0fbb4725aecbbed419718f3da61d87f9921b02d643cadcf18abbbad6023f70dd
---
# RB-8 relay board manual

Retrieved 2026-02-28 from https://example.invalid/rb8-manual. Kept as found (method section 22): not edited after saving.

Relay board RB-8 (excerpt kept: timing and power)

- Eight relays, 24 V coils, MQTT client built in.
- Real-time clock with a supercapacitor: keeps time for 72 hours without power.
- Schedules are stored on the board and run without the network.