Risco Eurosec CP8L is worth a try and there is a choice of keypads.

My old favourite was the Gardtech 800 series now discontinued.

Prior that Scantronic 9800  & 9600.

Also depends how many zones you got John, the Risco Eurosec is 8 Zone, they also do do the CPX which is 8 zone expandable to 16 as it comes in the box via resistors supplied and a built in landline dialler.

Because of the resistor configuration it means that if your existing PIRs are 6 core cable via the traditional 2 loop system you can easy convert each cable to take 2 detectors say back to back in adjacent rooms etc 2 cores for 1 zone, 2 cores for another zone and 2 cores for the 12v supply to both zones. ( 2 core one alarm loop via resistors is also more secure than 4 core 2 loop too)

Also can take a few wireless zones via add ons if you say have a garage/shed across the road etc.

As said, there are other brands too.

The world is yer lobster.

I`ve not mentioned systems that also take cameras or alarm diallers that work on the mobile phone networks for both calls and texts signalling and the abillity to switch a relay or two in your home via your mobile phone.

Risco Eurosec CP8L is worth a try and there is a choice of keypads.

My old favourite was the Gardtech 800 series now discontinued.

Prior that Scantronic 9800  & 9600.

Also depends how many zones you got John, the Risco Eurosec is 8 Zone, they also do do the CPX which is 8 zone expandable to 16 as it comes in the box via resistors supplied and a built in landline dialler.

Because of the resistor configuration it means that if your existing PIRs are 6 core cable via the traditional 2 loop system you can easy convert each cable to take 2 detectors say back to back in adjacent rooms etc 2 cores for 1 zone, 2 cores for another zone and 2 cores for the 12v supply to both zones. ( 2 core one alarm loop via resistors is also more secure than 4 core 2 loop too)

Also can take a few wireless zones via add ons if you say have a garage/shed across the road etc.

As said, there are other brands too.

The world is yer lobster.

I`ve not mentioned systems that also take cameras or alarm diallers that work on the mobile phone networks for both calls and texts signalling and the abillity to switch a relay or two in your home via your mobile phone.