Harp chiefs downplayed the need for the system, saying attacks on staff by the homeless were rare.
Gill Garwood, chief executive, said: “Attacks are something that very rarely happen. Staff are trained to deal with it, and if it does happen, we will get the mental health services involved.
“No one is allowed on the premises if they have been drinking alcohol. Panic alarms are standard good practice in hospitals and social services departments.”Riiiight….