... horizontal, 60 degrees vertical) 5) Option: Wireless smoke detector /gas leakage detector/rolling gap detector /active infrared intruder detector ... 60 vertical 10. Optional sensor: Wire siren, wireless smoke detector, gas leakage detector, vibration sensor, siren with strobe light, ... system, Wireless Remote controller, RF Transmitter/Receiver module, Smoke/Gas/PIR Motion/Door sensor and so on. We can ...