TRANSFER DEVICE DOCKING INDICATOR

A transfer device can include a housing including first and second docking cups, each of the first and second docking cups configured to receive and lockably engage a receiver of a transfer system; a security mechanism positioned inside the housing, the security mechanism including: first and second security levers; a first biasing member engaged with the first security lever and configured to bias the first security lever towards engagement with the receiver; and a second biasing member engaged with the second security lever and configured to bias the second security lever towards engagement with the receiver; and an indicator coupled to the security mechanism and at least partially visible from outside the housing, the indicator configured to indicate to a user of the transfer system whether the receiver is lockably engaged with one of the first and second docking cups.