Model: 1756-PA75 120/240V AC input 5V/24V DC output 1756-PA75R 120/240V AC input redundant power supply 1756-PA72 120/240V AC input 5V/24V DC output standard type 1756-PB75 24V DC input 5V/24V DC output 1756-PB75R 24V DC input redundant power supply 1756-PA75Y 120/240V AC input extended voltage 1756-PA72C 120/240V AC input with capacitor holding