| Business | Phone |
| Hidden Security System Inc 885 E Glen Ave, Ridgewood 7450 | (201) 445-3344 |
| Jen-Dea Alarm Svc 50 E Ridgewood Ave, Ridgewood 7450 | (201) 447-3344 |
| Sound Security Systems 4 Wilsey Sq, Ridgewood 7450 | (201) 445-8442 |
| Accurate Alarm Systems Corp 680 N Monroe St, Ridgewood 7450 | (201) 493-7111 |