Altronix PT724A

The Altronix PT724A is a 365-day annual event timer board providing programmable scheduling control for building automation, lighting, and security systems. Operating on 12 or 24 volts AC or DC, this low-power device features an accurate crystal-controlled clock, field-programmable event memory, and secure relay outputs rated for 10A at 120VAC/28VDC, with battery backup protecting programming during power loss.

Key Features

• 365-day annual calendar with 24-hour time base for year-round scheduling
• 50 daily/weekly events plus 350 block events and 10 holiday exceptions
• Crystal-controlled clock ensures accurate, drift-free timing
• Field-programmable via alphanumeric LCD display with intuitive menu interface
• Form C relay contacts rated 10A @ 120VAC / 28VDC for robust switching
• EEPROM memory protects all programmed events during power outages
• Optional lithium battery backup for clock continuity during extended power loss
• 100mA battery charging capacity for 12VDC sealed lead acid or gel cells

Technical Specifications

• Input Voltage: 12–24 VAC/DC (auto-sensing)
• Standby Current: 10mA (relay off), 50mA (relay on)
• Relay Contacts: Form C (SPDT), rated 10A @ 120VAC or 28VDC
• Battery Charging: 100mA charge current for lead acid/gel cells
• Events: 50 daily/weekly + 350 block + 10 holiday exceptions
• Time Base: 24-hour with day-of-week
• Calendar: Full 365-day annual cycle
• Board Dimensions: 5.25"W x 3"L x 1"D
• Memory: EEPROM with lithium battery option for backup

Certifications

• UL-recognized timing and control component
• Industrial-grade reliability for critical building systems