Delkim EV-R Bite Alarm Presentation Sets. The EV-R is a simple product without compromise! Packed full of features and a synthetic rubber coating making them 100% Weather Proof. Everything that makes a Delkim great has been made into a smaller package and at a more affordable price. Assembled and tested in the UK, the EV-R is built to the same standard you would expect. They are also compatible with all Delkim Visual Indication systems including the SmartLite intelligent hanger and accessories. Also available are single alarms so you can add up to four alarms to your setup.