ACS Coin payphone CCB PCO 500 ACS GSM coin Pay phonephone 1. Gsm sim card based payphone A. Supervised (indoor) B. Un-supervised(outdoor) Specifications: Gsm sim card based payphone (supervised/unsupervised) with payphone management system Features: 1. 900mhz/1800mhz gsm module 2. Double lcd screen for host and guest separately 3. Gsm operator & sim card lock 4. Call id 5. Hand-free function 6. Sms function 7. Ring and volume adjustable 8. Large memory stored up to 200 call records 9. Optional gsm payphone management system available 10. Pre-paid or post-paid mode are available 11. Support twin sim card(optional)12) 12. Internal or external antenna 13. Lithium backup battery 14. Clock/date, call duration/credit display 15. Records history: auto saves the last 100 dialed/received phone numbers 16. Color: white, light green, blue, brown(optional)specifications: Network support: gsm 900 and gsm1800 Power supply: Gsm900 mode class 4(2w)b) gsm900 mode class 1(1w)temperature: -20% +55 degree Backup battery: lithium battery Adapter power supply: ac 220v+10% Stand by hours: up to 48 hours Talk time: up to 5 hours 1*12=12 2 kg Cartoon box