ade Opimta alarm , how to switch the tamper warning light off and siren?

Hi could any one help,

i have a ade optima compact home alarm, i was replacing the guttering and accidentally caught the bell box, the alarm went off , i have swicthed the alarm of by entering the code, how ever the tamper warning light stays on and the key pad is locked, it wont let me press reset to switch the tamper light off, at first i found the micro switch had a loose connection, once i sorted that out, the alarm worked fine, until i went back to fitting the gutter, same thing happended again, and now the alarm wont go off, i have disconnect the power source,

is there a second tamper switch on the bell box ?

can anyone help,
also anyone know were i can purchase a micro switch for this model