Yes. As I said in post #213,
"In the Test position only, S1b connects the cathodes of diodes D1,D2 to ground. This allows base current to flow in both Q1 and Q2 via R4 and R6, thus switching on Q1 and Q2 irrespective of the state of both the dark sensor and the PIR."
"In the Test position only, S1b connects the cathodes of diodes D1,D2 to ground. This allows base current to flow in both Q1 and Q2 via R4 and R6, thus switching on Q1 and Q2 irrespective of the state of both the dark sensor and the PIR."
