RJM

Hello I'm hoping for some advice if the following is possible and if so, which products are suitable. I have an old Optima XM system with hardwired contacts for the Front Door Zone. I am trying to understand if there is a suitable product that allows me to change the hardwired door contact to a wireless battery operated contact. Is there a wireless converter I can instal next to the control box that can take the wireless signal from the contact and convert to a hardwired connection between the wireless converter and the relevant zone contacts in the Optima controller. If so, are there any suggestions of products for the converter and/or door contact. Thanks for any advice in advance.