Radio relay actuator 10A/250V AC. 1 normally open or normally closed contact, potential-free. Standby loss only 0.4 watts. For flush mounting. 49x51mm, 20mm deep. The connection terminals are plug-in terminals for conductor cross-sections from 0.2mm² to 2.5mm². Up to 32 radio buttons and radio window contacts can be taught in using the convenient tap technology. Bidirectional radio can be activated. Distance between control connections/contact 6mm. Local supply, switching and control voltage 230V. If the supply voltage fails, the switching position is retained. When the supply voltage returns, it is switched off in a defined manner. After installation, wait for the automatic short synchronization before connecting the switched consumer to the mains. In addition to the radio control input via an internal antenna, this radio actuator can also be controlled locally with a conventional 230V control button that may be mounted in front of it. A glow lamp current is not permitted. When programming, the contact function in the idle state can be defined as a normally open or normally closed contact. If the contact closes when at least one window is open, extractor hoods or similar can be activated or an alarm can be given. If the contact opens when at least one window is open, heating or air conditioning units can be switched off. Several wireless window contacts are linked to one another, the last wireless window contact to be programmed determines the function.