The Wireless Telegraphy Apparatus (Low Power Devices) (Exemption) Regulations 1989

Field disturbance and Doppler apparatus

2.  Wireless telegraphy apparatus –

(a) designed or adapted to produce a radiated field and respond to a variation in that field as a result of any intrusion or movement within that field by other devices, objects or persons in order to detect or monitor the movement of such devices, objects or persons; and

(b) constructed so as to be capable of use only on frequencies, and at a power, or field strength, as the case may be, not exceeding the maximum, specified for each category of apparatus in the table below –

Category	Description of apparatus	Frequencies	Maximum power EIRP	Maximum field strength
1	Apparatus designed solely to detect resonant circuits for use on a frequency of 13.56 MHz ± 0.2%	13.56 MHz ± 0.2 %		4500 μV/m
2	Apparatus (other than category 1 above) designed solely to detect resonant circuits	2 – 32 MHz		1000 μV/m
3	Apparatus designed solely for outdoor use	10.577 – 10.597 GHz	1.0 W
4	Apparatus designed solely for indoor use	10.675 – 10.699 GHz	1.0 W
5	Apparatus designed solely for use at a fixed location	24.150 – 24.250 GHz	2.0 W
6	Apparatus designed solely for use in a mobile application	24.250 – 24.350 GHz	2.0 W
7	Anti-collision devices	31.80 – 33.40 GHz	5.0 W
8	Any apparatus not within any category above	2.445 – 2.455 GHz	0.1 W