· 8 Independent Relay Channels - GPIO pin configurable

· Active LOW/HIGH Support - Configurable relay trigger logic

· Manual Override Mode - Direct ON/OFF control bypassing schedules

· Auto Mode - Returns to scheduled operation

· Real-time Status Display - Live relay state monitoring

· 4 Independent Schedules per Relay - Up to 64 total schedules system-wide

· Precise Time Control - Hour, minute, and second granularity

· Overnight Scheduling - Supports schedules crossing midnight

. Per-Schedule Enable/Disable - Individual schedule activation

· Automatic Schedule Processing - Runs continuously in background

· WiFi Station Mode - Connects to existing WiFi networks

· Access Point Mode - Creates its own WiFi network for configuration

· Dual-Mode Operation - Runs both Station and AP simultaneously

· Captive Portal - Automatic redirect to configuration page

· DNS Server - Handles all DNS requests for easy access

· NTP Client - Syncs time from internet time servers· Customizable NTP Server - Configure any NTP server

· Timezone Support - GMT offset and daylight saving configuration

· RTC Emulation - Stores last known time in EEPROM

· Cold Boot Time Recovery - Restores time without internet connection

· Automatic Time Sync - Regular NTP updates when connected

. Configuration Backup - All settings survive power cycles

· Version Migration - Automatic upgrades from older config versions

· Magic Number Validation - Detects corrupted/invalid configurations

. Stored Settings Include: · WiFi credentials (SSID & password) · AP credentials (SSID & password) · NTP server configuration · Timezone offsets · Last successful NTP sync timestamp · All 8 relay configurations and schedules

· Responsive Design - Works on desktop, tablet, and mobile

· 4 Main Pages:

1. Relay Control Dashboard - Main interface for all 16 relays
2. WiFi Settings - Configure station network connection
3. AP Settings - Configure access point credentials
4. NTP/RTC Settings - Configure time synchronization

. Real-time Clock Display - Live updating time in header

· Visual Status Indicators - Color-coded ON/OFF states

· Manual Control Buttons - Direct relay control

· Schedule Configuration - Intuitive time input for each schedule

· Checkbox Enable/Disable - Quick schedule activation

· Save per Relay - Individual relay configuration saving

· Auto-Refresh - Periodic status updates (every 60 seconds)

· Notification System - Success/error feedback messages

· Input Validation - Client-side time range validation

Endpoint Method Purpose

/api/relays GET Retrieve all relay states and schedules
/api/relay/manual POST Set manual override state
/api/relay/reset POST Cancel manual override
/api/relay/save POST Save schedule configuration
/api/time GET Get current system time
/api/wifi GET/POST Get/Set WiFi station settings
/api/ap GET/POST Get/Set Access Point settings
/api/ntp GET/POST Get/Set NTP configuration
/api/ntp/sync POST Force immediate NTP sync

· Password Protection - AP password with minimum 8 characters

· Open Network Option - Blank password for open AP

· Password Not Exposed - API doesn't return stored passwords

· Input Validation - Server-side validation for all settings

· Factory Defaults - Automatic initialization on first boot

· Configuration Migration - Handles version upgrades gracefully

· Automatic Restart - After WiFi/AP configuration changes

· Serial Debug Output - Comprehensive logging for troubleshooting

· Non-blocking Operation - Schedules process without interrupting web server

· Dual-core ESP32 Support - Efficient multitasking

· Graceful Degradation - Continues operation without WiFi

· Watchdog Friendly - Short delay() calls prevent resets

· 8 Relays with 4 schedules each = 32 total schedules

· EEPROM Storage: 2048 bytes

· Configuration Version: 2 (with migration from v1)

· Supported NTP Servers: Any standard NTP pool/server

· Default Timezone: Philippines GMT+8 (28800 seconds)

· Default AP: ESP32_8CH_Smart_Switch / ESP32-admin

· Home automation lighting control

· Irrigation/sprinkler systems

· Aquarium/terrarium lighting schedules

· Industrial equipment timing

· Holiday decoration timing

· Greenhouse environmental control

· Security lighting schedules

· Energy management systems