Access Modular Controller 2 Installing | en 29Bosch Security Systems B.V. Installation manual 2020-01 | V02 |Figure 4.17: Location of the relay output connectorsEach relay output can operate in ‘wet’ mode, using the AMC2-4R4's internal 12/24 Vdc powersupply for external devices or ‘dry’ mode with potential free contacts for externally poweredsystems.Figure 4.18: Wet mode and dry mode of the AMC2 relay outputsNotice!Risk of damage to equipmentTo prevent damage to the relays note the following specifications.– the maximum switching current is 1.25 A– the maximum switching voltage is 30 Vdc– only ohm resistive load can be connected to the relay– inductive loads have to be short circuited using recovery diodes, see image below. Thesediodes (1N4004) are supplied with every AMC2-4R4 package.– If you need higher voltage for special applications you have to connect external relays tothe outputs. Depending on the power supply mode, it is recommended to use thefollowing Wiegand relay types:– Flare move 12DC1W10A– Flare move 24DC1W16AIf using locally manufactured products, please ensure that the specifications of the productare identical with the those listed above.