Catalog > Consumer Electronics > Security & Alarms > Paradox Alarms Door Release Relay Door Release Relay with Normally Open Dry Contact for Select Aiphone Intercom Systems PDX RY-PA.E Aiphone RY-PA Door Release Relay with Normally Open Dry Contact for Select Aiphone Intercom Systems {PI3835} Discontinued Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE