System for protecting buildings, gardens and airfields against intrusion by humans and animals comprises flat water nozzles activated by IR beam security system, pump producing sprays which are charged so that intruder receives mild shock
摘要
<p>The system for protecting buildings, gardens and airfields against intrusion by humans and animals comprises flat water nozzles (2) which are activated by an IR beam security system (5). A pump produces sprays which are charged so that the intruder (P) receives a mild shock.</p>
