This is a top of the range Philips baby monitor at a very low cost (I've never seen it below £70, and I've had my eye on it for the last 6 months).
You cannot buy the lower model (the SCD520 - without the humidity sensor or on base temperature LCD) for less than this.
This Philips Avent baby monitor ensures that you hear your baby in crystal clear clarity without interference. An ideal way to keep a careful check on baby or toddler, whilst giving you the peace of mind and freedom to get on with other things around the home.
Your baby’s peaceful relaxation can be easily affected by even the slightest variations in climate, so it provides you with real time digital temperature and humidity readings live from your baby’s room. For total baby comfort and parental reassurance, the portable parent unit allows you to set the temperature monitor to instantly alert you, either by sound or vibration, to any variations which are outside the pre-set level.
It has recently been superseded by the SCD535 (who's only difference is slightly reduced energy consumption when in use at lower distance), so it looks like ToysRus/BabiesRus are discontinuing them.
What the SCD535 has on top of the SCD530 - worth £50 extra?:
The ECO mode has been developed to enable you to reduce your energy consumption. Monitoring your baby from a short distance requires less power than monitoring your baby from a larger distance. When you monitor your baby from a short distance, you can activate the ECO mode. By switching on the ECO mode, your baby monitor uses less energy and is therefore more environmentally-friendly.
This is instore only, but you could try reserve and collect and maybe get 3% TCP/Quidco.