1. Model: AK-200FC/C1 2. Sensor: semiconductor (Made in China) 3. Gas detected: carbon monoxide 4. Size：115mm*70mm*40mm 5. Working voltage： 220VAC /110VAC、12VDC-20VDC 6. Additional Function: linked fans 7. Networking：wired networking（NO、NC） 8. Wireless networking mode：315MHZ/433MHZ (2262 OR 1527) 9. Alarm level: 150 PPM (Chinese Standard) 10. Patent NO.: 200830103203.9