RF2 force-guided relays provide a two-pole option suitable for users that need only two contacts or want to add multiple relays in series. When used with elevator controls, interlock switches, light curtains or emergency stop switches, the relays act as a fail-safe mechanism in safety circuits to detect failures, such as those arising from damage to the contact spring. The relays comply with international safety standards including EN50205 Type A TUV approval, UL, CSA and CE.