Download Data sheet: ds_vokkero_guardian_wi_eng ArticleNo/ P/N: VOKKER-GUARD-FCE004-WI-PL Radiotype: Vokkero Standard/Plus 4-wire Guardian Wireless interface; Vokkero Plus This Wireless Interface (WI) enables a Connect betweeen a Vokkero Plus system and a compatible fixed installation 4-wire intercom system. Price request Download Data sheet: ds_vokkero_guardian_wi_eng