Patent. No. RSA 99/3554 USA 60/156 597





Technical Description

The RAU Animal Immobilizer has been developed after much scientific research. The instrument is constructed from high quality materials and equipment. The immobilizer is used for electronic immobilization of animals using a very low electric current. This immobilization is not in anyway stressful to the animals. To date, field trials have shown no negative effects on pregnant animals at any stage of pregnancy. The immobilizer has also been used successfully on horses and on wildlife. The primary use of the immobilizer is for the restraint of cattle, ideally when branding, de-horning, castration, hoof trimming or minor treatment procedures.

The kit consists of a metal box (pulse generator), a rectal probe and a charging adapter. A rubber ring is provided on the probe to set the depth of insertion.

IMPORTANT: Although the equipment is able to immobilize an animal, it in no way releases the operator from the responsibility of providing adequate pain control. It should not be used for surgical procedures where a local or general anesthetic would, under normal circumstances, be required.

Maintenance Information

WARNING: To reduce the risk of electrical shock, do not remove

the cover (or back). NO SERVICEABLE PARTS INSIDE.

Refer servicing to qualified service personnel.

The pulse generator is powered by a rechargeable, sealed 12-volt dry lead-acid battery capable of delivering 1.2 amps. A charging adapter for vehicle cigarette lighter is provided. The adapter has a positive (+) on the outer pole and a negative (-) on the inner pole. Charge time on a vehicle is approximately 5 hours. While charging, a green light will indicate that the battery is being recharged correctly.

A full charge will function for approximately 8 hours.

Operating Procedure

a.  An animal must be in a controlled space such as a small pen or a chute with access for inspection and a facility for the animal to lean on while immobilized. When a leg is raised off the ground the animal may become unbalanced.

Important: If the animal is being restrained with the use of a head clamp, care should be taken to check that the animal is not leaning into the clamp, restricting blood flow to the head. This may cause the animal to collapse.

b.  The unit must be switched off, and the control knob must be set to zero. Fully insert the probe’s plug into the socket on the pulse generator.

c.  With the unit switched off, lift the tail and insert the probe into the rectum of the animal to the rubber ring or when the tip of the probe makes contact with the femoral nerve, approximately six inches. Adjust the ring as necessary. To facilitate the insertion, a small amount of lubricant should be used.

d.  Allow the tail to return to its normal position. The rubber ring should rest between the tail and the body of the animal. This will keep the probe in position. The probe may be tilted to ensure better contact.

e.  With the control knob set to zero. Switch the unit on. The control knob is adjusted from zero on a scale of 1 to 10 to the required strength for whichever procedure is required. (A setting of between 2 and 5 on the control knob, with the power switch in the “LOW” position, is normally adequate to immobilize an animal).

f.  The animal’s muscles will firm up as it is immobilized. It will be found that there is no longer a need to hold the inserted probe.

g.  For branding, a lower current is normally used to restrain the animal. Inserting the probe from the left of the tail will immobilize the right leg, and visa versa.

h.  For working on hooves the probe is inserted deep enough to stimulate the femoral nerve, and a higher setting is used. This causes the animal to raise its leg in the air

Attention to the Animal’s Head

For working on the head of the animal, the control knob is gradually increased until the head is extended.

Important: At no stage is the head completely immobilized.

A nose restraint may still be required.

The animal’s normal breathing is not affected.

Important: If the Immobilizer is to be used on calves or small animals the probe is inserted to a shallower depth. The animal’s reaction will indicate the correct depth

This device has been used on a wide variety of animals and results vary. Variations between animals as well as the rectal contact need to be taken into account.

It is advised that the animal’s reaction be observed for the desired effect rather than relying on fixed dial settings. One will get to know the ideal setting through frequent use.

There is absolutely no radiation emitted from this device.


The RAU Easy Farming Immobilizer carries a one (1) year warranty on the pulse generator and three (3) months guarantee on the probe. The probe must be washed off after use to reduce the corrosion from the acids contained in animal waste.

There is no guarantee on the lead-acid battery.

There are no serviceable parts in the pulse generator. All repairs and servicing to be carried out by a qualified service technician.

It is recommended to recharge the battery after a day’s work. If not in regular use, charge the battery every three months.

Distributor and Service Center for North America:

I&G Distributors USA

4965 Hidden Branches Drive

Atlanta, GA 30338 – 3907

Phone (770) 350 0342

For more information about the RAU Animal Immobilizer, please visit www.animalimmobilizer.com or call (770) 350 0342