IT181 Part no.: 420225 as IT180, but additional: one relais output 230 V- switching power max. 2000 VA AC / 150 W DC- switching current max. 8 A 250 V AC, 5 A 30 V DC- switching voltage max. 250 V AC / 100 V DC one 230 V switching input (coupling relais) status indication with 15 multi color LEDs also available as OPC field device and as alerting device with VdS2465 protocol Options: external antenna embedded antenne ("Puck antenna") RS232 interface on screw-type terminals Accesories (not included in delivery): 9V block accumulator GSM antenna Embedded GSM antenna ("Puck antenna") GSM antenna extension cable Adpter for extension of the RS232 interface over LAN / internet PIR motion detector Temperature sensor Water sensor More information /downloads: Operation manual Documentation Downloads Pricelist (German)