The most basic alarm consists of one or more sensors to detect intruders, and an alerting device to indicate the intrusion. 1  However, a typical premises security alarm employs the following components: 1  Premises control unit (PCU), Alarm Control Panel (ACP), or simply panel: The brain of the system, it reads sensor inputs, tracks arm/disarm status, and signals intrusions.
However, these doses are massive compared with the very low amount of chemicals a woman is exposed to when colouring her hair. Using hair dye when you're pregnant Many women decide to wait to dye their hair until after the first 12 weeks of pregnancy, when the risk of chemical substances harming the baby is much lower. If you're colouring your hair yourself, you can reduce the risk further by making sure you: 1  wear gloves. 2  leave the dye on for the minimum time. 3  work in a well-ventilated room. 4  rinse your scalp once the dye is applied.
The hair loss can seem more extreme if your hair grew much more than normal during pregnancy, or if you have long hair. Most women will return to their usual hair growth cycle within six months, or between 6 and 12 months after birth.