Ring Siren installtion on 20 Jan

We would like to proceed with the installation of the Ring Siren. We have already purchased the siren, and the installation point is as shown in the attached image. Please note that we do not have a ladder, so you will need to bring one for the installation. We are also not sure whether the existing wires at that point are sufficient to connect the siren. However, we do have the Ring Plug-In Adaptor available. Kindly let us know if you need any further information from our side.