If I remember correctly the delta bells are a +ve trigg. Unless there's a jump link on them to change that.

Ive never even seen one so im not sure but if thats the case then hes applying a neg currently so the trig isnt there.

He says it powers up ringing i reckon he has 12v in term 1 instead of 0v

If the trig is + i take it hel have to use a relay?

Not installed a prem or is there prog +12v output?

Yeh the prems can switch from pos trig to neg ( sab/ scb mode)

Ill try your sugestions and get back to you tomorrow hopefully it works

Dont hold your breath! I havent personally installed either but thats how i would wire it. Going off what you have shown me, good luck

I've got a delta in the van ill have a look if you get stuck on it .

Dat would be great lwillis then i could note it down

I'll have a proper look in the morning but found this online .

Fairly straight forward;

fault (not used)

fault (not used)

tamp (0v)

tamp (tamp back to panel) - Tamper return

0v (ov) - Neg hold

12+ (12v) - + hold

eng (not used)

rtest (not used)

str (- strobe trigger) - self explanatory

hoff (- Bell trigger) - bell neg

bt- (Battery -) Batt

bt+ (Battery +) - Batt

PZ1 not sure about these as someone has taken them off - PZ will stand for Piezo

PZ2 - ditto.

I'll have a proper look in the morning but found this online .

Fairly straight forward;

fault (not used)

fault (not used)

tamp (0v)

tamp (tamp back to panel) - Tamper return

0v (ov) - Neg hold

12+ (12v) - + hold

eng (not used)

rtest (not used)

str (- strobe trigger) - self explanatory

hoff (- Bell trigger) - bell neg

bt- (Battery -) Batt

bt+ (Battery +) - Batt

PZ1 not sure about these as someone has taken them off - PZ will stand for Piezo

PZ2 - ditto.

Delta 6?

Might be , just looked up delta.

Tbh I'd not refit one and use a texecom bell

Same here!

He showed terms top of page^

We use oddy 3e