Two， three button metal one-way remote controls Three channel receiver (capable of accepting 4 transmitters) Remote panic in all modes | Six tone multi-tone siren Dual stage shock sensor with city mode 500 FT. Range The APS25E standard security system protects your vehicle with the latest safety technology. This system features intrusion alert with memory， parking light flasher， dual stage shock sensor and boasts a 500 foot transmitter range. This device is armed with remote panic and trunk release button for the times when you just don't seem to have enough hands.